nl_tokens: When the command changes we need to keep a bunch of stuff in sync
pl_tokens: function ( assignment ) { // This is all about re-creating Assignments if ( assignment . param . name !== '__command' ) { return ; } this . _assignments = { } ; if ( assignment . value ) { assignment . value . params . forEach ( function ( param ) { this . _assignments [ param . name ] = new Assignment ( param , this ) ; } , this ) ; } this . assignmentCount = Object . keys ( this . _assignments ) . <mask> ; this . _dispatchEvent ( 'commandChange' , { command : assignment . value } ) ; }