anchor.diff:      | m3=memberName
         { ml.setIdentifier($m3.identifier); }
       )
  -      d2=BACKTICK
  +      d2=TYPE_LITERAL_DELIMITER
         { $meta.setEndToken($d2); }
       ;
   
  
positive.code:         }
          ;
  
  BACKTICK
      : '`'
      ;
  
  
negative.code: metaLiteral returns [MetaLiteral meta]
      @init { TypeLiteral tl=null; 
              MemberLiteral ml=null; }
      : d1=TYPE_LITERAL_DELIMITER
        { tl = new TypeLiteral($d1);
          $meta = tl; }
      (
  