protected function getClientParams( $names = array( 'id', 'resource', 'site', 'lang' ) )
	{
		$list = [];

		foreach( $names as $name )
		{
			if( ( $val = $this->view->param( $name ) ) !== null ) {
				$list[$name] = $val;
			}
		}

		return $list;
	}