public function getFileAsXML( $path )
	{
		try
		{
			$xml = $this->getFile( $this->getActualUri( $path ) );
			isXml( $xml );
			return simplexml_load_string( $xml );
		}
		catch ( Exception $ex )
		{
			throw XBRL_TaxonomyPackageException::withError( "tpe:invalidMetaDataFile", $ex->getMessage() );
		}
	}