/**
  * Identify getter return type by its reflection.
  *
  * @param \Zend\Code\Reflection\MethodReflection $methodReflection
  * @return array <pre>array(
  *     'type' => <string>$type,
  *     'isRequired' => $isRequired,
  *     'description' => $description
  * )</pre>
  * @throws \InvalidArgumentException
  */
 public function getGetterReturnType($methodReflection)
 {
     $methodDocBlock = $methodReflection->getDocBlock();
     if (!$methodDocBlock) {
         throw new \InvalidArgumentException("Each getter must have description with @return annotation. " . "See {$methodReflection->getDeclaringClass()->getName()}::{$methodReflection->getName()}()");
     }
     $returnAnnotations = $methodDocBlock->getTags('return');
     if (empty($returnAnnotations)) {
         throw new \InvalidArgumentException("Getter return type must be specified using @return annotation. " . "See {$methodReflection->getDeclaringClass()->getName()}::{$methodReflection->getName()}()");
     }
     /** @var \Zend\Code\Reflection\DocBlock\Tag\ReturnTag $returnAnnotation */
     $returnAnnotation = current($returnAnnotations);
     $returnType = $returnAnnotation->getType();
     /*
      * Adding this code as a workaround since \Zend\Code\Reflection\DocBlock\Tag\ReturnTag::initialize does not
      * detect and return correct type for array of objects in annotation.
      * eg @return \Magento\Webapi\Service\Entity\SimpleData[] is returned with type
      * \Magento\Webapi\Service\Entity\SimpleData instead of \Magento\Webapi\Service\Entity\SimpleData[]
      */
     $escapedReturnType = str_replace('[]', '\\[\\]', $returnType);
     $escapedReturnType = str_replace('\\', '\\\\', $escapedReturnType);
     if (preg_match("/.*\\@return\\s+({$escapedReturnType}).*/i", $methodDocBlock->getContents(), $matches)) {
         $returnType = $matches[1];
     }
     $isRequired = preg_match("/.*\\@return\\s+\\S+\\|null.*/i", $methodDocBlock->getContents(), $matches) ? false : true;
     return ['type' => $returnType, 'isRequired' => $isRequired, 'description' => $returnAnnotation->getDescription(), 'parameterCount' => $methodReflection->getNumberOfRequiredParameters()];
 }