public function deleteService( $type )
	{
		$this->_notifyListeners( 'deleteService.before', $type );

		if( isset( $this->_services[$type] ) ) {
			unset( $this->_services[$type] );
			$this->_modified = true;
		}

		$this->_notifyListeners( 'deleteService.after', $type );
	}