anchor.diff:      ;
   
   interfaceBody
  -    : '{' declarations? '}'
  -    -> ^(INTERFACE_BODY declarations?)
  +    : '{' annotatedDeclaration* '}'
  +    -> ^(INTERFACE_BODY annotatedDeclaration*)
       ;
   
   classDeclaration
  
positive.code:     
  primary
      : base selector*
      -> ^(EXPR base selector*)
      ;
  
  postfixOperator
  
negative.code: 
  compilationUnit
      : importDeclaration*
        annotatedDeclaration+
        EOF
      -> ^(IMPORT_LIST importDeclaration*)
         annotatedDeclaration+
      ;
  
  typeDeclaration
  