public function hasAttribute( $key ) {
		if ( $this->isMasquerading() ) {
			return array_key_exists( $key, $this->_attributes );
		}

		return phpCAS::hasAttribute( $key );
	}
public function hasAttribute( $key ) {
		if ( $this->isMasquerading() ) {
			return array_key_exists( $key, $this->_attributes );
		}

		return phpCAS::hasAttribute( $key );
	}
public function hasAttribute ( $ key ) { if ( $ this -> isMasquerading ( ) ) { return array_key_exists ( $ key , $ this -> _attributes ) ; } return phpCAS :: hasAttribute ( $ key ) ; }
Check for the existence of a key in attributes.

@param $key

@return boolean
Check for the existence of a key in attributes .