anchor.diff:  memberAccessOperator
       : DOT | QUEST DOT
       ;
  -    
  +
   modifierList
       : (annotations | modifier)+
       ;
  
positive.code:     ;
  
  secondaryConstructor
      : modifierList? CONSTRUCTOR NL* functionValueParameters (NL* COLON NL* constructorDelegationCall)? NL* block
      ;
  
  constructorDelegationCall
  
negative.code:     | propertyDeclaration
      | anonymousInitializer
      | secondaryConstructor
      | typeAlias) anysemi+
      ;
  
  anonymousInitializer
  