anchor.diff:      ;
   
   formalParameters
  -    :   LPAREN formalParameterList? rparen
  +    :   LPAREN formalParameterList? RPAREN
       ;
   
   formalParameterList
  
positive.code:  */
  methodDeclaration[int t, int ct]
      :   { 3 == $ct }?
          returnType[$ct] methodName LPAREN rparen (DEFAULT nls elementValue)?
      |
          (   { 0 == $t }?
              modifiersOpt typeParameters?
  
negative.code:     ;
  
  typeNamePairs
      :   LPAREN typeNamePair (COMMA typeNamePair)* RPAREN
      ;
  
  typeNamePair
  