protected function loadMetadata($className)
    {
        if (class_exists($className)) {
            return parent::loadMetadata($className);
        }
        throw MappingException::classNotFound($className);
    }
protected function loadMetadata($className)
    {
        if (class_exists($className)) {
            return parent::loadMetadata($className);
        }
        throw MappingException::classNotFound($className);
    }
protected function loadMetadata ( $ className ) { if ( class_exists ( $ className ) ) { return parent :: loadMetadata ( $ className ) ; } throw MappingException :: classNotFound ( $ className ) ; }
Loads the metadata of the class in question and all it's ancestors whose metadata
is still not loaded.

@param string $className The name of the class for which the metadata should get loaded.
@return array
@throws MappingException
Loads the metadata of the class in question and all it s ancestors whose metadata is still not loaded .