code: public function loadMetadataForClass(\ReflectionClass $class)
      {
          $classMetadata                  = new ClassMetadata($name = $class->name);
          $classMetadata->fileResources[] = $class->getFilename();
          foreach ($class->getMethods() as $method) {
              /**
               * @var \ReflectionMethod $method
               */
              if ($method->class !== $name) {
                  continue;
              }
  
              $methodAnnotations = $this->reader->getMethodAnnotations($method);
              foreach ($methodAnnotations as $annotation) {
                  if ($annotation instanceof ParamType) {
                      if(!$classMetadata->hasMethod($method->name)) {
                          $this->addMethod($classMetadata, $method);
                      }
                      $classMetadata->setParameterType($method->getName(), $annotation->name, $annotation->type);
                      $classMetadata->setParameterOptions($method->getName(), $annotation->name, $annotation->options);
                  }
  
                  if ($annotation instanceof ReturnType) {
                      $classMetadata->setReturnType($method->getName(), $annotation->type);
                  }
              }
          }
  
          return $classMetadata;
      }
docs: @param \ReflectionClass $class
  
  @return \Metadata\ClassMetadata