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      1 grammar t053heteroTP16;
      2 options {
      3     language=JavaScript;
      4     output=AST;
      5     tokenVocab=t053heteroT16;
      6 }
      7 tokens { ROOT; }
      8 @header {
      9 function V16(ttype, x) {
     10     V16.superclass.constructor.call(this, new org.antlr.runtime.CommonToken(ttype));
     11     this.foobar = x;
     12 };
     13 org.antlr.lang.extend(V16, org.antlr.runtime.tree.CommonTree, {
     14     toString: function() {
     15         return t053heteroTP16Parser.tokenNames[this.getType()] + "<V>;" + this.foobar;
     16     }
     17 });
     18 }
     19 a : ID -> ROOT<V16>[42] ID
     20   ;
     21 
     22