nl_tokens: Get nested namespace by property .
pl_tokens: function ( root , action ) { var parts , ns , i , l ; root = root || Ext . global ; parts = action . toString ( ) . split ( '.' ) ; for ( i = 0 , l = parts . length ; i < l ; i ++ ) { ns = <mask> [ i ] ; root = root [ ns ] ; if ( typeof root === 'undefined' ) { return root ; } } return root ; }