anchor.diff:      ;
           
   queryExpr 
  -    : expression                                #SingletonQueryExpr
  -    | expression evalExprList                   #WithEvalExpr
  -    | expression evalExprList evalArrayList     #WithEvalExprAndArrayList
  +    : expression ( evalExprList evalArrayList? )?
       ;
       
   evalExprList 
  
positive.code:     ;
      
  INT : 'i';
  
  Whitespace
      :   [ \t]+ -> skip
  
negative.code: RightBracket : ']';
  LeftBrace : '{';
  RightBrace : '}';
  