/**
  * Create a new instance of this class
  * @param string uri URI of the field/predicate map
  * @param Credentials credentials the credentials to use for authenticated requests (optional)
  */
 function __construct($uri, $credentials = null)
 {
     parent::__construct($uri, $credentials);
 }
 /**
  * Create a new instance of this class
  * @param string uri URI of the query profile
  * @param Credentials credentials the credentials to use for authenticated requests (optional)
  */
 function __construct($uri, $credentials = null, $request_factory = null)
 {
     parent::__construct($uri, $credentials, $request_factory);
 }