ExtensionInterface" * * @param string $className * @return bool|string */ public function generate($className) { if (!$this->isExtensionInterface($className)) { return false; } $interfaceGenerator = new InterfaceGenerator(); $interfaceGenerator->setName($className) ->setExtendedClass(\Magento\Framework\Api\ExtensionAttributesInterface::class); return $interfaceGenerator->generate(); } /** * Determines if the passed in class name is an ExtensionInterface type. * * @param string $className * @return bool */ private function isExtensionInterface($className) { $suffix = "ExtensionInterface"; $sourceName = $className !== null ? rtrim(substr($className, 0, -strlen($suffix)), '\\') : ''; return $sourceName . $suffix == $className; } }