nl_tokens: Expand this node .
pl_tokens: function ( recursive , callback , scope ) { var me = this ; if ( ! me . isLeaf ( ) ) { if ( me . isLoading ( ) ) { me . on ( 'expand' , function ( ) { me . expand ( recursive , callback , scope ) ; } , me , { single : <mask> } ) ; } else { if ( ! me . isExpanded ( ) ) { // The TreeStore actually listens for the beforeexpand method and checks // whether we have to asynchronously load the children from the server // first. Thats why we pass a callback function to the event that the // store can call once it has loaded and parsed all the children. me . fireAction ( 'expand' , [ this ] , function ( ) { me . set ( 'expanded' , true ) ; Ext . callback ( callback , scope || me , [ me . childNodes ] ) ; } ) ; } else { Ext . callback ( callback , scope || me , [ me . childNodes ] ) ; } } } else { Ext . callback ( callback , scope || me ) ; } }