nl_tokens: Returns the classes required for the application
pl_tokens: function ( ) { var result = { } ; this . __classes . forEach ( name => result [ name ] = true ) ; this . __expandClassnames ( this . getInclude ( ) ) . forEach ( name => result [ name ] = true ) ; this . __expandClassnames ( this . getExclude ( ) ) . forEach ( name => delete result [ name ] ) ; // We sort the result so that we can get a consistent ordering for loading classes, otherwise the order in //  which the filing system returns the files can cause classes to be loaded in a lightly different sequence; //  that would not cause a problem, except that the build is not 100% repeatable. return Object . keys ( <mask> ) . sort ( ) ; }