<?php

namespace Microsoft\Graph\Generated\Models;

use DateTime;
use Microsoft\Kiota\Abstractions\Serialization\Parsable;
use Microsoft\Kiota\Abstractions\Serialization\ParseNode;
use Microsoft\Kiota\Abstractions\Serialization\SerializationWriter;
use Microsoft\Kiota\Abstractions\Types\TypeUtils;

class Event extends OutlookItem implements Parsable 
{
    /**
     * Instantiates a new Event and sets the default values.
    */
    public function __construct() {
        parent::__construct();
        $this->setOdataType('#microsoft.graph.event');
    }

    /**
     * Creates a new instance of the appropriate class based on discriminator value
     * @param ParseNode $parseNode The parse node to use to read the discriminator value and create the object
     * @return Event
    */
    public static function createFromDiscriminatorValue(ParseNode $parseNode): Event {
        return new Event();
    }

    /**
     * Gets the allowNewTimeProposals property value. true if the meeting organizer allows invitees to propose a new time when responding; otherwise, false. Optional. The default is true.
     * @return bool|null
    */
    public function getAllowNewTimeProposals(): ?bool {
        $val = $this->getBackingStore()->get('allowNewTimeProposals');
        if (is_null($val) || is_bool($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'allowNewTimeProposals'");
    }

    /**
     * Gets the attachments property value. The collection of FileAttachment, ItemAttachment, and referenceAttachment attachments for the event. Navigation property. Read-only. Nullable.
     * @return array<Attachment>|null
    */
    public function getAttachments(): ?array {
        $val = $this->getBackingStore()->get('attachments');
        if (is_array($val) || is_null($val)) {
            TypeUtils::validateCollectionValues($val, Attachment::class);
            /** @var array<Attachment>|null $val */
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'attachments'");
    }

    /**
     * Gets the attendees property value. The collection of attendees for the event.
     * @return array<Attendee>|null
    */
    public function getAttendees(): ?array {
        $val = $this->getBackingStore()->get('attendees');
        if (is_array($val) || is_null($val)) {
            TypeUtils::validateCollectionValues($val, Attendee::class);
            /** @var array<Attendee>|null $val */
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'attendees'");
    }

    /**
     * Gets the body property value. The body of the message associated with the event. It can be in HTML or text format.
     * @return ItemBody|null
    */
    public function getBody(): ?ItemBody {
        $val = $this->getBackingStore()->get('body');
        if (is_null($val) || $val instanceof ItemBody) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'body'");
    }

    /**
     * Gets the bodyPreview property value. The preview of the message associated with the event. It's in text format.
     * @return string|null
    */
    public function getBodyPreview(): ?string {
        $val = $this->getBackingStore()->get('bodyPreview');
        if (is_null($val) || is_string($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'bodyPreview'");
    }

    /**
     * Gets the calendar property value. The calendar that contains the event. Navigation property. Read-only.
     * @return Calendar|null
    */
    public function getCalendar(): ?Calendar {
        $val = $this->getBackingStore()->get('calendar');
        if (is_null($val) || $val instanceof Calendar) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'calendar'");
    }

    /**
     * Gets the cancelledOccurrences property value. Contains occurrenceId property values of canceled instances in a recurring series, if the event is the series master. Instances in a recurring series that are canceled are called canceled occurences.Returned only on $select in a Get operation which specifies the ID (seriesMasterId property value) of a series master event.
     * @return array<string>|null
    */
    public function getCancelledOccurrences(): ?array {
        $val = $this->getBackingStore()->get('cancelledOccurrences');
        if (is_array($val) || is_null($val)) {
            TypeUtils::validateCollectionValues($val, 'string');
            /** @var array<string>|null $val */
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'cancelledOccurrences'");
    }

    /**
     * Gets the end property value. The date, time, and time zone that the event ends. By default, the end time is in UTC.
     * @return DateTimeTimeZone|null
    */
    public function getEnd(): ?DateTimeTimeZone {
        $val = $this->getBackingStore()->get('end');
        if (is_null($val) || $val instanceof DateTimeTimeZone) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'end'");
    }

    /**
     * Gets the exceptionOccurrences property value. Contains the id property values of the event instances that are exceptions in a recurring series.Exceptions can differ from other occurrences in a recurring series, such as the subject, start or end times, or attendees. Exceptions don't include canceled occurrences.Returned only on $select and $expand in a GET operation that specifies the ID (seriesMasterId property value) of a series master event.
     * @return array<Event>|null
    */
    public function getExceptionOccurrences(): ?array {
        $val = $this->getBackingStore()->get('exceptionOccurrences');
        if (is_array($val) || is_null($val)) {
            TypeUtils::validateCollectionValues($val, Event::class);
            /** @var array<Event>|null $val */
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'exceptionOccurrences'");
    }

    /**
     * Gets the extensions property value. The collection of open extensions defined for the event. Nullable.
     * @return array<Extension>|null
    */
    public function getExtensions(): ?array {
        $val = $this->getBackingStore()->get('extensions');
        if (is_array($val) || is_null($val)) {
            TypeUtils::validateCollectionValues($val, Extension::class);
            /** @var array<Extension>|null $val */
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'extensions'");
    }

    /**
     * The deserialization information for the current model
     * @return array<string, callable(ParseNode): void>
    */
    public function getFieldDeserializers(): array {
        $o = $this;
        return array_merge(parent::getFieldDeserializers(), [
            'allowNewTimeProposals' => fn(ParseNode $n) => $o->setAllowNewTimeProposals($n->getBooleanValue()),
            'attachments' => fn(ParseNode $n) => $o->setAttachments($n->getCollectionOfObjectValues([Attachment::class, 'createFromDiscriminatorValue'])),
            'attendees' => fn(ParseNode $n) => $o->setAttendees($n->getCollectionOfObjectValues([Attendee::class, 'createFromDiscriminatorValue'])),
            'body' => fn(ParseNode $n) => $o->setBody($n->getObjectValue([ItemBody::class, 'createFromDiscriminatorValue'])),
            'bodyPreview' => fn(ParseNode $n) => $o->setBodyPreview($n->getStringValue()),
            'calendar' => fn(ParseNode $n) => $o->setCalendar($n->getObjectValue([Calendar::class, 'createFromDiscriminatorValue'])),
            'cancelledOccurrences' => function (ParseNode $n) {
                $val = $n->getCollectionOfPrimitiveValues();
                if (is_array($val)) {
                    TypeUtils::validateCollectionValues($val, 'string');
                }
                /** @var array<string>|null $val */
                $this->setCancelledOccurrences($val);
            },
            'end' => fn(ParseNode $n) => $o->setEnd($n->getObjectValue([DateTimeTimeZone::class, 'createFromDiscriminatorValue'])),
            'exceptionOccurrences' => fn(ParseNode $n) => $o->setExceptionOccurrences($n->getCollectionOfObjectValues([Event::class, 'createFromDiscriminatorValue'])),
            'extensions' => fn(ParseNode $n) => $o->setExtensions($n->getCollectionOfObjectValues([Extension::class, 'createFromDiscriminatorValue'])),
            'hasAttachments' => fn(ParseNode $n) => $o->setHasAttachments($n->getBooleanValue()),
            'hideAttendees' => fn(ParseNode $n) => $o->setHideAttendees($n->getBooleanValue()),
            'iCalUId' => fn(ParseNode $n) => $o->setICalUId($n->getStringValue()),
            'importance' => fn(ParseNode $n) => $o->setImportance($n->getEnumValue(Importance::class)),
            'instances' => fn(ParseNode $n) => $o->setInstances($n->getCollectionOfObjectValues([Event::class, 'createFromDiscriminatorValue'])),
            'isAllDay' => fn(ParseNode $n) => $o->setIsAllDay($n->getBooleanValue()),
            'isCancelled' => fn(ParseNode $n) => $o->setIsCancelled($n->getBooleanValue()),
            'isDraft' => fn(ParseNode $n) => $o->setIsDraft($n->getBooleanValue()),
            'isOnlineMeeting' => fn(ParseNode $n) => $o->setIsOnlineMeeting($n->getBooleanValue()),
            'isOrganizer' => fn(ParseNode $n) => $o->setIsOrganizer($n->getBooleanValue()),
            'isReminderOn' => fn(ParseNode $n) => $o->setIsReminderOn($n->getBooleanValue()),
            'location' => fn(ParseNode $n) => $o->setLocation($n->getObjectValue([Location::class, 'createFromDiscriminatorValue'])),
            'locations' => fn(ParseNode $n) => $o->setLocations($n->getCollectionOfObjectValues([Location::class, 'createFromDiscriminatorValue'])),
            'multiValueExtendedProperties' => fn(ParseNode $n) => $o->setMultiValueExtendedProperties($n->getCollectionOfObjectValues([MultiValueLegacyExtendedProperty::class, 'createFromDiscriminatorValue'])),
            'onlineMeeting' => fn(ParseNode $n) => $o->setOnlineMeeting($n->getObjectValue([OnlineMeetingInfo::class, 'createFromDiscriminatorValue'])),
            'onlineMeetingProvider' => fn(ParseNode $n) => $o->setOnlineMeetingProvider($n->getEnumValue(OnlineMeetingProviderType::class)),
            'onlineMeetingUrl' => fn(ParseNode $n) => $o->setOnlineMeetingUrl($n->getStringValue()),
            'organizer' => fn(ParseNode $n) => $o->setOrganizer($n->getObjectValue([Recipient::class, 'createFromDiscriminatorValue'])),
            'originalEndTimeZone' => fn(ParseNode $n) => $o->setOriginalEndTimeZone($n->getStringValue()),
            'originalStart' => fn(ParseNode $n) => $o->setOriginalStart($n->getDateTimeValue()),
            'originalStartTimeZone' => fn(ParseNode $n) => $o->setOriginalStartTimeZone($n->getStringValue()),
            'recurrence' => fn(ParseNode $n) => $o->setRecurrence($n->getObjectValue([PatternedRecurrence::class, 'createFromDiscriminatorValue'])),
            'reminderMinutesBeforeStart' => fn(ParseNode $n) => $o->setReminderMinutesBeforeStart($n->getIntegerValue()),
            'responseRequested' => fn(ParseNode $n) => $o->setResponseRequested($n->getBooleanValue()),
            'responseStatus' => fn(ParseNode $n) => $o->setResponseStatus($n->getObjectValue([ResponseStatus::class, 'createFromDiscriminatorValue'])),
            'sensitivity' => fn(ParseNode $n) => $o->setSensitivity($n->getEnumValue(Sensitivity::class)),
            'seriesMasterId' => fn(ParseNode $n) => $o->setSeriesMasterId($n->getStringValue()),
            'showAs' => fn(ParseNode $n) => $o->setShowAs($n->getEnumValue(FreeBusyStatus::class)),
            'singleValueExtendedProperties' => fn(ParseNode $n) => $o->setSingleValueExtendedProperties($n->getCollectionOfObjectValues([SingleValueLegacyExtendedProperty::class, 'createFromDiscriminatorValue'])),
            'start' => fn(ParseNode $n) => $o->setStart($n->getObjectValue([DateTimeTimeZone::class, 'createFromDiscriminatorValue'])),
            'subject' => fn(ParseNode $n) => $o->setSubject($n->getStringValue()),
            'transactionId' => fn(ParseNode $n) => $o->setTransactionId($n->getStringValue()),
            'type' => fn(ParseNode $n) => $o->setType($n->getEnumValue(EventType::class)),
            'webLink' => fn(ParseNode $n) => $o->setWebLink($n->getStringValue()),
        ]);
    }

    /**
     * Gets the hasAttachments property value. Set to true if the event has attachments.
     * @return bool|null
    */
    public function getHasAttachments(): ?bool {
        $val = $this->getBackingStore()->get('hasAttachments');
        if (is_null($val) || is_bool($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'hasAttachments'");
    }

    /**
     * Gets the hideAttendees property value. When set to true, each attendee only sees themselves in the meeting request and meeting Tracking list. The default is false.
     * @return bool|null
    */
    public function getHideAttendees(): ?bool {
        $val = $this->getBackingStore()->get('hideAttendees');
        if (is_null($val) || is_bool($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'hideAttendees'");
    }

    /**
     * Gets the iCalUId property value. A unique identifier for an event across calendars. This ID is different for each occurrence in a recurring series. Read-only.
     * @return string|null
    */
    public function getICalUId(): ?string {
        $val = $this->getBackingStore()->get('iCalUId');
        if (is_null($val) || is_string($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'iCalUId'");
    }

    /**
     * Gets the importance property value. The importance of the event. The possible values are: low, normal, high.
     * @return Importance|null
    */
    public function getImportance(): ?Importance {
        $val = $this->getBackingStore()->get('importance');
        if (is_null($val) || $val instanceof Importance) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'importance'");
    }

    /**
     * Gets the instances property value. The occurrences of a recurring series, if the event is a series master. This property includes occurrences that are part of the recurrence pattern, and exceptions modified, but doesn't include occurrences canceled from the series. Navigation property. Read-only. Nullable.
     * @return array<Event>|null
    */
    public function getInstances(): ?array {
        $val = $this->getBackingStore()->get('instances');
        if (is_array($val) || is_null($val)) {
            TypeUtils::validateCollectionValues($val, Event::class);
            /** @var array<Event>|null $val */
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'instances'");
    }

    /**
     * Gets the isAllDay property value. Set to true if the event lasts all day. If true, regardless of whether it's a single-day or multi-day event, start, and endtime must be set to midnight and be in the same time zone.
     * @return bool|null
    */
    public function getIsAllDay(): ?bool {
        $val = $this->getBackingStore()->get('isAllDay');
        if (is_null($val) || is_bool($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'isAllDay'");
    }

    /**
     * Gets the isCancelled property value. Set to true if the event has been canceled.
     * @return bool|null
    */
    public function getIsCancelled(): ?bool {
        $val = $this->getBackingStore()->get('isCancelled');
        if (is_null($val) || is_bool($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'isCancelled'");
    }

    /**
     * Gets the isDraft property value. Set to true if the user has updated the meeting in Outlook but hasn't sent the updates to attendees. Set to false if all changes are sent, or if the event is an appointment without any attendees.
     * @return bool|null
    */
    public function getIsDraft(): ?bool {
        $val = $this->getBackingStore()->get('isDraft');
        if (is_null($val) || is_bool($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'isDraft'");
    }

    /**
     * Gets the isOnlineMeeting property value. True if this event has online meeting information (that is, onlineMeeting points to an onlineMeetingInfo resource), false otherwise. Default is false (onlineMeeting is null). Optional.  After you set isOnlineMeeting to true, Microsoft Graph initializes onlineMeeting. Subsequently, Outlook ignores any further changes to isOnlineMeeting, and the meeting remains available online.
     * @return bool|null
    */
    public function getIsOnlineMeeting(): ?bool {
        $val = $this->getBackingStore()->get('isOnlineMeeting');
        if (is_null($val) || is_bool($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'isOnlineMeeting'");
    }

    /**
     * Gets the isOrganizer property value. Set to true if the calendar owner (specified by the owner property of the calendar) is the organizer of the event (specified by the organizer property of the event). It also applies if a delegate organized the event on behalf of the owner.
     * @return bool|null
    */
    public function getIsOrganizer(): ?bool {
        $val = $this->getBackingStore()->get('isOrganizer');
        if (is_null($val) || is_bool($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'isOrganizer'");
    }

    /**
     * Gets the isReminderOn property value. Set to true if an alert is set to remind the user of the event.
     * @return bool|null
    */
    public function getIsReminderOn(): ?bool {
        $val = $this->getBackingStore()->get('isReminderOn');
        if (is_null($val) || is_bool($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'isReminderOn'");
    }

    /**
     * Gets the location property value. The location of the event.
     * @return Location|null
    */
    public function getLocation(): ?Location {
        $val = $this->getBackingStore()->get('location');
        if (is_null($val) || $val instanceof Location) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'location'");
    }

    /**
     * Gets the locations property value. The locations where the event is held or attended from. The location and locations properties always correspond with each other. If you update the location property, any prior locations in the locations collection are removed and replaced by the new location value.
     * @return array<Location>|null
    */
    public function getLocations(): ?array {
        $val = $this->getBackingStore()->get('locations');
        if (is_array($val) || is_null($val)) {
            TypeUtils::validateCollectionValues($val, Location::class);
            /** @var array<Location>|null $val */
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'locations'");
    }

    /**
     * Gets the multiValueExtendedProperties property value. The collection of multi-value extended properties defined for the event. Read-only. Nullable.
     * @return array<MultiValueLegacyExtendedProperty>|null
    */
    public function getMultiValueExtendedProperties(): ?array {
        $val = $this->getBackingStore()->get('multiValueExtendedProperties');
        if (is_array($val) || is_null($val)) {
            TypeUtils::validateCollectionValues($val, MultiValueLegacyExtendedProperty::class);
            /** @var array<MultiValueLegacyExtendedProperty>|null $val */
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'multiValueExtendedProperties'");
    }

    /**
     * Gets the onlineMeeting property value. Details for an attendee to join the meeting online. The default is null. Read-only. After you set the isOnlineMeeting and onlineMeetingProvider properties to enable a meeting online, Microsoft Graph initializes onlineMeeting. When set, the meeting remains available online, and you can't change the isOnlineMeeting, onlineMeetingProvider, and onlneMeeting properties again.
     * @return OnlineMeetingInfo|null
    */
    public function getOnlineMeeting(): ?OnlineMeetingInfo {
        $val = $this->getBackingStore()->get('onlineMeeting');
        if (is_null($val) || $val instanceof OnlineMeetingInfo) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'onlineMeeting'");
    }

    /**
     * Gets the onlineMeetingProvider property value. Represents the online meeting service provider. By default, onlineMeetingProvider is unknown. The possible values are unknown, teamsForBusiness, skypeForBusiness, and skypeForConsumer. Optional.  After you set onlineMeetingProvider, Microsoft Graph initializes onlineMeeting. Subsequently, you can't change onlineMeetingProvider again, and the meeting remains available online.
     * @return OnlineMeetingProviderType|null
    */
    public function getOnlineMeetingProvider(): ?OnlineMeetingProviderType {
        $val = $this->getBackingStore()->get('onlineMeetingProvider');
        if (is_null($val) || $val instanceof OnlineMeetingProviderType) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'onlineMeetingProvider'");
    }

    /**
     * Gets the onlineMeetingUrl property value. A URL for an online meeting. The property is set only when an organizer specifies in Outlook that an event is an online meeting such as Skype. Read-only.To access the URL to join an online meeting, use joinUrl which is exposed via the onlineMeeting property of the event. The onlineMeetingUrl property will be deprecated in the future.
     * @return string|null
    */
    public function getOnlineMeetingUrl(): ?string {
        $val = $this->getBackingStore()->get('onlineMeetingUrl');
        if (is_null($val) || is_string($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'onlineMeetingUrl'");
    }

    /**
     * Gets the organizer property value. The organizer of the event.
     * @return Recipient|null
    */
    public function getOrganizer(): ?Recipient {
        $val = $this->getBackingStore()->get('organizer');
        if (is_null($val) || $val instanceof Recipient) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'organizer'");
    }

    /**
     * Gets the originalEndTimeZone property value. The end time zone that was set when the event was created. A value of tzone://Microsoft/Custom indicates that a legacy custom time zone was set in desktop Outlook.
     * @return string|null
    */
    public function getOriginalEndTimeZone(): ?string {
        $val = $this->getBackingStore()->get('originalEndTimeZone');
        if (is_null($val) || is_string($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'originalEndTimeZone'");
    }

    /**
     * Gets the originalStart property value. Represents the start time of an event when it's initially created as an occurrence or exception in a recurring series. This property is not returned for events that are single instances. Its date and time information is expressed in ISO 8601 format and is always in UTC. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z
     * @return DateTime|null
    */
    public function getOriginalStart(): ?DateTime {
        $val = $this->getBackingStore()->get('originalStart');
        if (is_null($val) || $val instanceof DateTime) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'originalStart'");
    }

    /**
     * Gets the originalStartTimeZone property value. The start time zone that was set when the event was created. A value of tzone://Microsoft/Custom indicates that a legacy custom time zone was set in desktop Outlook.
     * @return string|null
    */
    public function getOriginalStartTimeZone(): ?string {
        $val = $this->getBackingStore()->get('originalStartTimeZone');
        if (is_null($val) || is_string($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'originalStartTimeZone'");
    }

    /**
     * Gets the recurrence property value. The recurrence pattern for the event.
     * @return PatternedRecurrence|null
    */
    public function getRecurrence(): ?PatternedRecurrence {
        $val = $this->getBackingStore()->get('recurrence');
        if (is_null($val) || $val instanceof PatternedRecurrence) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'recurrence'");
    }

    /**
     * Gets the reminderMinutesBeforeStart property value. The number of minutes before the event start time that the reminder alert occurs.
     * @return int|null
    */
    public function getReminderMinutesBeforeStart(): ?int {
        $val = $this->getBackingStore()->get('reminderMinutesBeforeStart');
        if (is_null($val) || is_int($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'reminderMinutesBeforeStart'");
    }

    /**
     * Gets the responseRequested property value. Default is true, which represents the organizer would like an invitee to send a response to the event.
     * @return bool|null
    */
    public function getResponseRequested(): ?bool {
        $val = $this->getBackingStore()->get('responseRequested');
        if (is_null($val) || is_bool($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'responseRequested'");
    }

    /**
     * Gets the responseStatus property value. Indicates the type of response sent in response to an event message.
     * @return ResponseStatus|null
    */
    public function getResponseStatus(): ?ResponseStatus {
        $val = $this->getBackingStore()->get('responseStatus');
        if (is_null($val) || $val instanceof ResponseStatus) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'responseStatus'");
    }

    /**
     * Gets the sensitivity property value. The possible values are: normal, personal, private, and confidential.
     * @return Sensitivity|null
    */
    public function getSensitivity(): ?Sensitivity {
        $val = $this->getBackingStore()->get('sensitivity');
        if (is_null($val) || $val instanceof Sensitivity) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'sensitivity'");
    }

    /**
     * Gets the seriesMasterId property value. The ID for the recurring series master item, if this event is part of a recurring series.
     * @return string|null
    */
    public function getSeriesMasterId(): ?string {
        $val = $this->getBackingStore()->get('seriesMasterId');
        if (is_null($val) || is_string($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'seriesMasterId'");
    }

    /**
     * Gets the showAs property value. The status to show. The possible values are: free, tentative, busy, oof, workingElsewhere, unknown.
     * @return FreeBusyStatus|null
    */
    public function getShowAs(): ?FreeBusyStatus {
        $val = $this->getBackingStore()->get('showAs');
        if (is_null($val) || $val instanceof FreeBusyStatus) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'showAs'");
    }

    /**
     * Gets the singleValueExtendedProperties property value. The collection of single-value extended properties defined for the event. Read-only. Nullable.
     * @return array<SingleValueLegacyExtendedProperty>|null
    */
    public function getSingleValueExtendedProperties(): ?array {
        $val = $this->getBackingStore()->get('singleValueExtendedProperties');
        if (is_array($val) || is_null($val)) {
            TypeUtils::validateCollectionValues($val, SingleValueLegacyExtendedProperty::class);
            /** @var array<SingleValueLegacyExtendedProperty>|null $val */
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'singleValueExtendedProperties'");
    }

    /**
     * Gets the start property value. The start date, time, and time zone of the event. By default, the start time is in UTC.
     * @return DateTimeTimeZone|null
    */
    public function getStart(): ?DateTimeTimeZone {
        $val = $this->getBackingStore()->get('start');
        if (is_null($val) || $val instanceof DateTimeTimeZone) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'start'");
    }

    /**
     * Gets the subject property value. The text of the event's subject line.
     * @return string|null
    */
    public function getSubject(): ?string {
        $val = $this->getBackingStore()->get('subject');
        if (is_null($val) || is_string($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'subject'");
    }

    /**
     * Gets the transactionId property value. A custom identifier specified by a client app for the server to avoid redundant POST operations in case of client retries to create the same event. It's useful when low network connectivity causes the client to time out before receiving a response from the server for the client's prior create-event request. After you set transactionId when creating an event, you can't change transactionId in a subsequent update. This property is only returned in a response payload if an app has set it. Optional.
     * @return string|null
    */
    public function getTransactionId(): ?string {
        $val = $this->getBackingStore()->get('transactionId');
        if (is_null($val) || is_string($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'transactionId'");
    }

    /**
     * Gets the type property value. The event type. The possible values are: singleInstance, occurrence, exception, seriesMaster. Read-only
     * @return EventType|null
    */
    public function getType(): ?EventType {
        $val = $this->getBackingStore()->get('type');
        if (is_null($val) || $val instanceof EventType) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'type'");
    }

    /**
     * Gets the webLink property value. The URL to open the event in Outlook on the web.Outlook on the web opens the event in the browser if you are signed in to your mailbox. Otherwise, Outlook on the web prompts you to sign in.This URL can't be accessed from within an iFrame.
     * @return string|null
    */
    public function getWebLink(): ?string {
        $val = $this->getBackingStore()->get('webLink');
        if (is_null($val) || is_string($val)) {
            return $val;
        }
        throw new \UnexpectedValueException("Invalid type found in backing store for 'webLink'");
    }

    /**
     * Serializes information the current object
     * @param SerializationWriter $writer Serialization writer to use to serialize this model
    */
    public function serialize(SerializationWriter $writer): void {
        parent::serialize($writer);
        $writer->writeBooleanValue('allowNewTimeProposals', $this->getAllowNewTimeProposals());
        $writer->writeCollectionOfObjectValues('attachments', $this->getAttachments());
        $writer->writeCollectionOfObjectValues('attendees', $this->getAttendees());
        $writer->writeObjectValue('body', $this->getBody());
        $writer->writeStringValue('bodyPreview', $this->getBodyPreview());
        $writer->writeObjectValue('calendar', $this->getCalendar());
        $writer->writeCollectionOfPrimitiveValues('cancelledOccurrences', $this->getCancelledOccurrences());
        $writer->writeObjectValue('end', $this->getEnd());
        $writer->writeCollectionOfObjectValues('exceptionOccurrences', $this->getExceptionOccurrences());
        $writer->writeCollectionOfObjectValues('extensions', $this->getExtensions());
        $writer->writeBooleanValue('hasAttachments', $this->getHasAttachments());
        $writer->writeBooleanValue('hideAttendees', $this->getHideAttendees());
        $writer->writeStringValue('iCalUId', $this->getICalUId());
        $writer->writeEnumValue('importance', $this->getImportance());
        $writer->writeCollectionOfObjectValues('instances', $this->getInstances());
        $writer->writeBooleanValue('isAllDay', $this->getIsAllDay());
        $writer->writeBooleanValue('isCancelled', $this->getIsCancelled());
        $writer->writeBooleanValue('isDraft', $this->getIsDraft());
        $writer->writeBooleanValue('isOnlineMeeting', $this->getIsOnlineMeeting());
        $writer->writeBooleanValue('isOrganizer', $this->getIsOrganizer());
        $writer->writeBooleanValue('isReminderOn', $this->getIsReminderOn());
        $writer->writeObjectValue('location', $this->getLocation());
        $writer->writeCollectionOfObjectValues('locations', $this->getLocations());
        $writer->writeCollectionOfObjectValues('multiValueExtendedProperties', $this->getMultiValueExtendedProperties());
        $writer->writeObjectValue('onlineMeeting', $this->getOnlineMeeting());
        $writer->writeEnumValue('onlineMeetingProvider', $this->getOnlineMeetingProvider());
        $writer->writeStringValue('onlineMeetingUrl', $this->getOnlineMeetingUrl());
        $writer->writeObjectValue('organizer', $this->getOrganizer());
        $writer->writeStringValue('originalEndTimeZone', $this->getOriginalEndTimeZone());
        $writer->writeDateTimeValue('originalStart', $this->getOriginalStart());
        $writer->writeStringValue('originalStartTimeZone', $this->getOriginalStartTimeZone());
        $writer->writeObjectValue('recurrence', $this->getRecurrence());
        $writer->writeIntegerValue('reminderMinutesBeforeStart', $this->getReminderMinutesBeforeStart());
        $writer->writeBooleanValue('responseRequested', $this->getResponseRequested());
        $writer->writeObjectValue('responseStatus', $this->getResponseStatus());
        $writer->writeEnumValue('sensitivity', $this->getSensitivity());
        $writer->writeStringValue('seriesMasterId', $this->getSeriesMasterId());
        $writer->writeEnumValue('showAs', $this->getShowAs());
        $writer->writeCollectionOfObjectValues('singleValueExtendedProperties', $this->getSingleValueExtendedProperties());
        $writer->writeObjectValue('start', $this->getStart());
        $writer->writeStringValue('subject', $this->getSubject());
        $writer->writeStringValue('transactionId', $this->getTransactionId());
        $writer->writeEnumValue('type', $this->getType());
        $writer->writeStringValue('webLink', $this->getWebLink());
    }

    /**
     * Sets the allowNewTimeProposals property value. true if the meeting organizer allows invitees to propose a new time when responding; otherwise, false. Optional. The default is true.
     * @param bool|null $value Value to set for the allowNewTimeProposals property.
    */
    public function setAllowNewTimeProposals(?bool $value): void {
        $this->getBackingStore()->set('allowNewTimeProposals', $value);
    }

    /**
     * Sets the attachments property value. The collection of FileAttachment, ItemAttachment, and referenceAttachment attachments for the event. Navigation property. Read-only. Nullable.
     * @param array<Attachment>|null $value Value to set for the attachments property.
    */
    public function setAttachments(?array $value): void {
        $this->getBackingStore()->set('attachments', $value);
    }

    /**
     * Sets the attendees property value. The collection of attendees for the event.
     * @param array<Attendee>|null $value Value to set for the attendees property.
    */
    public function setAttendees(?array $value): void {
        $this->getBackingStore()->set('attendees', $value);
    }

    /**
     * Sets the body property value. The body of the message associated with the event. It can be in HTML or text format.
     * @param ItemBody|null $value Value to set for the body property.
    */
    public function setBody(?ItemBody $value): void {
        $this->getBackingStore()->set('body', $value);
    }

    /**
     * Sets the bodyPreview property value. The preview of the message associated with the event. It's in text format.
     * @param string|null $value Value to set for the bodyPreview property.
    */
    public function setBodyPreview(?string $value): void {
        $this->getBackingStore()->set('bodyPreview', $value);
    }

    /**
     * Sets the calendar property value. The calendar that contains the event. Navigation property. Read-only.
     * @param Calendar|null $value Value to set for the calendar property.
    */
    public function setCalendar(?Calendar $value): void {
        $this->getBackingStore()->set('calendar', $value);
    }

    /**
     * Sets the cancelledOccurrences property value. Contains occurrenceId property values of canceled instances in a recurring series, if the event is the series master. Instances in a recurring series that are canceled are called canceled occurences.Returned only on $select in a Get operation which specifies the ID (seriesMasterId property value) of a series master event.
     * @param array<string>|null $value Value to set for the cancelledOccurrences property.
    */
    public function setCancelledOccurrences(?array $value): void {
        $this->getBackingStore()->set('cancelledOccurrences', $value);
    }

    /**
     * Sets the end property value. The date, time, and time zone that the event ends. By default, the end time is in UTC.
     * @param DateTimeTimeZone|null $value Value to set for the end property.
    */
    public function setEnd(?DateTimeTimeZone $value): void {
        $this->getBackingStore()->set('end', $value);
    }

    /**
     * Sets the exceptionOccurrences property value. Contains the id property values of the event instances that are exceptions in a recurring series.Exceptions can differ from other occurrences in a recurring series, such as the subject, start or end times, or attendees. Exceptions don't include canceled occurrences.Returned only on $select and $expand in a GET operation that specifies the ID (seriesMasterId property value) of a series master event.
     * @param array<Event>|null $value Value to set for the exceptionOccurrences property.
    */
    public function setExceptionOccurrences(?array $value): void {
        $this->getBackingStore()->set('exceptionOccurrences', $value);
    }

    /**
     * Sets the extensions property value. The collection of open extensions defined for the event. Nullable.
     * @param array<Extension>|null $value Value to set for the extensions property.
    */
    public function setExtensions(?array $value): void {
        $this->getBackingStore()->set('extensions', $value);
    }

    /**
     * Sets the hasAttachments property value. Set to true if the event has attachments.
     * @param bool|null $value Value to set for the hasAttachments property.
    */
    public function setHasAttachments(?bool $value): void {
        $this->getBackingStore()->set('hasAttachments', $value);
    }

    /**
     * Sets the hideAttendees property value. When set to true, each attendee only sees themselves in the meeting request and meeting Tracking list. The default is false.
     * @param bool|null $value Value to set for the hideAttendees property.
    */
    public function setHideAttendees(?bool $value): void {
        $this->getBackingStore()->set('hideAttendees', $value);
    }

    /**
     * Sets the iCalUId property value. A unique identifier for an event across calendars. This ID is different for each occurrence in a recurring series. Read-only.
     * @param string|null $value Value to set for the iCalUId property.
    */
    public function setICalUId(?string $value): void {
        $this->getBackingStore()->set('iCalUId', $value);
    }

    /**
     * Sets the importance property value. The importance of the event. The possible values are: low, normal, high.
     * @param Importance|null $value Value to set for the importance property.
    */
    public function setImportance(?Importance $value): void {
        $this->getBackingStore()->set('importance', $value);
    }

    /**
     * Sets the instances property value. The occurrences of a recurring series, if the event is a series master. This property includes occurrences that are part of the recurrence pattern, and exceptions modified, but doesn't include occurrences canceled from the series. Navigation property. Read-only. Nullable.
     * @param array<Event>|null $value Value to set for the instances property.
    */
    public function setInstances(?array $value): void {
        $this->getBackingStore()->set('instances', $value);
    }

    /**
     * Sets the isAllDay property value. Set to true if the event lasts all day. If true, regardless of whether it's a single-day or multi-day event, start, and endtime must be set to midnight and be in the same time zone.
     * @param bool|null $value Value to set for the isAllDay property.
    */
    public function setIsAllDay(?bool $value): void {
        $this->getBackingStore()->set('isAllDay', $value);
    }

    /**
     * Sets the isCancelled property value. Set to true if the event has been canceled.
     * @param bool|null $value Value to set for the isCancelled property.
    */
    public function setIsCancelled(?bool $value): void {
        $this->getBackingStore()->set('isCancelled', $value);
    }

    /**
     * Sets the isDraft property value. Set to true if the user has updated the meeting in Outlook but hasn't sent the updates to attendees. Set to false if all changes are sent, or if the event is an appointment without any attendees.
     * @param bool|null $value Value to set for the isDraft property.
    */
    public function setIsDraft(?bool $value): void {
        $this->getBackingStore()->set('isDraft', $value);
    }

    /**
     * Sets the isOnlineMeeting property value. True if this event has online meeting information (that is, onlineMeeting points to an onlineMeetingInfo resource), false otherwise. Default is false (onlineMeeting is null). Optional.  After you set isOnlineMeeting to true, Microsoft Graph initializes onlineMeeting. Subsequently, Outlook ignores any further changes to isOnlineMeeting, and the meeting remains available online.
     * @param bool|null $value Value to set for the isOnlineMeeting property.
    */
    public function setIsOnlineMeeting(?bool $value): void {
        $this->getBackingStore()->set('isOnlineMeeting', $value);
    }

    /**
     * Sets the isOrganizer property value. Set to true if the calendar owner (specified by the owner property of the calendar) is the organizer of the event (specified by the organizer property of the event). It also applies if a delegate organized the event on behalf of the owner.
     * @param bool|null $value Value to set for the isOrganizer property.
    */
    public function setIsOrganizer(?bool $value): void {
        $this->getBackingStore()->set('isOrganizer', $value);
    }

    /**
     * Sets the isReminderOn property value. Set to true if an alert is set to remind the user of the event.
     * @param bool|null $value Value to set for the isReminderOn property.
    */
    public function setIsReminderOn(?bool $value): void {
        $this->getBackingStore()->set('isReminderOn', $value);
    }

    /**
     * Sets the location property value. The location of the event.
     * @param Location|null $value Value to set for the location property.
    */
    public function setLocation(?Location $value): void {
        $this->getBackingStore()->set('location', $value);
    }

    /**
     * Sets the locations property value. The locations where the event is held or attended from. The location and locations properties always correspond with each other. If you update the location property, any prior locations in the locations collection are removed and replaced by the new location value.
     * @param array<Location>|null $value Value to set for the locations property.
    */
    public function setLocations(?array $value): void {
        $this->getBackingStore()->set('locations', $value);
    }

    /**
     * Sets the multiValueExtendedProperties property value. The collection of multi-value extended properties defined for the event. Read-only. Nullable.
     * @param array<MultiValueLegacyExtendedProperty>|null $value Value to set for the multiValueExtendedProperties property.
    */
    public function setMultiValueExtendedProperties(?array $value): void {
        $this->getBackingStore()->set('multiValueExtendedProperties', $value);
    }

    /**
     * Sets the onlineMeeting property value. Details for an attendee to join the meeting online. The default is null. Read-only. After you set the isOnlineMeeting and onlineMeetingProvider properties to enable a meeting online, Microsoft Graph initializes onlineMeeting. When set, the meeting remains available online, and you can't change the isOnlineMeeting, onlineMeetingProvider, and onlneMeeting properties again.
     * @param OnlineMeetingInfo|null $value Value to set for the onlineMeeting property.
    */
    public function setOnlineMeeting(?OnlineMeetingInfo $value): void {
        $this->getBackingStore()->set('onlineMeeting', $value);
    }

    /**
     * Sets the onlineMeetingProvider property value. Represents the online meeting service provider. By default, onlineMeetingProvider is unknown. The possible values are unknown, teamsForBusiness, skypeForBusiness, and skypeForConsumer. Optional.  After you set onlineMeetingProvider, Microsoft Graph initializes onlineMeeting. Subsequently, you can't change onlineMeetingProvider again, and the meeting remains available online.
     * @param OnlineMeetingProviderType|null $value Value to set for the onlineMeetingProvider property.
    */
    public function setOnlineMeetingProvider(?OnlineMeetingProviderType $value): void {
        $this->getBackingStore()->set('onlineMeetingProvider', $value);
    }

    /**
     * Sets the onlineMeetingUrl property value. A URL for an online meeting. The property is set only when an organizer specifies in Outlook that an event is an online meeting such as Skype. Read-only.To access the URL to join an online meeting, use joinUrl which is exposed via the onlineMeeting property of the event. The onlineMeetingUrl property will be deprecated in the future.
     * @param string|null $value Value to set for the onlineMeetingUrl property.
    */
    public function setOnlineMeetingUrl(?string $value): void {
        $this->getBackingStore()->set('onlineMeetingUrl', $value);
    }

    /**
     * Sets the organizer property value. The organizer of the event.
     * @param Recipient|null $value Value to set for the organizer property.
    */
    public function setOrganizer(?Recipient $value): void {
        $this->getBackingStore()->set('organizer', $value);
    }

    /**
     * Sets the originalEndTimeZone property value. The end time zone that was set when the event was created. A value of tzone://Microsoft/Custom indicates that a legacy custom time zone was set in desktop Outlook.
     * @param string|null $value Value to set for the originalEndTimeZone property.
    */
    public function setOriginalEndTimeZone(?string $value): void {
        $this->getBackingStore()->set('originalEndTimeZone', $value);
    }

    /**
     * Sets the originalStart property value. Represents the start time of an event when it's initially created as an occurrence or exception in a recurring series. This property is not returned for events that are single instances. Its date and time information is expressed in ISO 8601 format and is always in UTC. For example, midnight UTC on Jan 1, 2014 is 2014-01-01T00:00:00Z
     * @param DateTime|null $value Value to set for the originalStart property.
    */
    public function setOriginalStart(?DateTime $value): void {
        $this->getBackingStore()->set('originalStart', $value);
    }

    /**
     * Sets the originalStartTimeZone property value. The start time zone that was set when the event was created. A value of tzone://Microsoft/Custom indicates that a legacy custom time zone was set in desktop Outlook.
     * @param string|null $value Value to set for the originalStartTimeZone property.
    */
    public function setOriginalStartTimeZone(?string $value): void {
        $this->getBackingStore()->set('originalStartTimeZone', $value);
    }

    /**
     * Sets the recurrence property value. The recurrence pattern for the event.
     * @param PatternedRecurrence|null $value Value to set for the recurrence property.
    */
    public function setRecurrence(?PatternedRecurrence $value): void {
        $this->getBackingStore()->set('recurrence', $value);
    }

    /**
     * Sets the reminderMinutesBeforeStart property value. The number of minutes before the event start time that the reminder alert occurs.
     * @param int|null $value Value to set for the reminderMinutesBeforeStart property.
    */
    public function setReminderMinutesBeforeStart(?int $value): void {
        $this->getBackingStore()->set('reminderMinutesBeforeStart', $value);
    }

    /**
     * Sets the responseRequested property value. Default is true, which represents the organizer would like an invitee to send a response to the event.
     * @param bool|null $value Value to set for the responseRequested property.
    */
    public function setResponseRequested(?bool $value): void {
        $this->getBackingStore()->set('responseRequested', $value);
    }

    /**
     * Sets the responseStatus property value. Indicates the type of response sent in response to an event message.
     * @param ResponseStatus|null $value Value to set for the responseStatus property.
    */
    public function setResponseStatus(?ResponseStatus $value): void {
        $this->getBackingStore()->set('responseStatus', $value);
    }

    /**
     * Sets the sensitivity property value. The possible values are: normal, personal, private, and confidential.
     * @param Sensitivity|null $value Value to set for the sensitivity property.
    */
    public function setSensitivity(?Sensitivity $value): void {
        $this->getBackingStore()->set('sensitivity', $value);
    }

    /**
     * Sets the seriesMasterId property value. The ID for the recurring series master item, if this event is part of a recurring series.
     * @param string|null $value Value to set for the seriesMasterId property.
    */
    public function setSeriesMasterId(?string $value): void {
        $this->getBackingStore()->set('seriesMasterId', $value);
    }

    /**
     * Sets the showAs property value. The status to show. The possible values are: free, tentative, busy, oof, workingElsewhere, unknown.
     * @param FreeBusyStatus|null $value Value to set for the showAs property.
    */
    public function setShowAs(?FreeBusyStatus $value): void {
        $this->getBackingStore()->set('showAs', $value);
    }

    /**
     * Sets the singleValueExtendedProperties property value. The collection of single-value extended properties defined for the event. Read-only. Nullable.
     * @param array<SingleValueLegacyExtendedProperty>|null $value Value to set for the singleValueExtendedProperties property.
    */
    public function setSingleValueExtendedProperties(?array $value): void {
        $this->getBackingStore()->set('singleValueExtendedProperties', $value);
    }

    /**
     * Sets the start property value. The start date, time, and time zone of the event. By default, the start time is in UTC.
     * @param DateTimeTimeZone|null $value Value to set for the start property.
    */
    public function setStart(?DateTimeTimeZone $value): void {
        $this->getBackingStore()->set('start', $value);
    }

    /**
     * Sets the subject property value. The text of the event's subject line.
     * @param string|null $value Value to set for the subject property.
    */
    public function setSubject(?string $value): void {
        $this->getBackingStore()->set('subject', $value);
    }

    /**
     * Sets the transactionId property value. A custom identifier specified by a client app for the server to avoid redundant POST operations in case of client retries to create the same event. It's useful when low network connectivity causes the client to time out before receiving a response from the server for the client's prior create-event request. After you set transactionId when creating an event, you can't change transactionId in a subsequent update. This property is only returned in a response payload if an app has set it. Optional.
     * @param string|null $value Value to set for the transactionId property.
    */
    public function setTransactionId(?string $value): void {
        $this->getBackingStore()->set('transactionId', $value);
    }

    /**
     * Sets the type property value. The event type. The possible values are: singleInstance, occurrence, exception, seriesMaster. Read-only
     * @param EventType|null $value Value to set for the type property.
    */
    public function setType(?EventType $value): void {
        $this->getBackingStore()->set('type', $value);
    }

    /**
     * Sets the webLink property value. The URL to open the event in Outlook on the web.Outlook on the web opens the event in the browser if you are signed in to your mailbox. Otherwise, Outlook on the web prompts you to sign in.This URL can't be accessed from within an iFrame.
     * @param string|null $value Value to set for the webLink property.
    */
    public function setWebLink(?string $value): void {
        $this->getBackingStore()->set('webLink', $value);
    }

}