anchor.diff:    const FunctionEndpoint(this.target);
   
     const factory FunctionEndpoint.http(String target, Handler function) =
  -      HttpFunctionEndPoint;
  +      _HttpFunctionEndPoint;
   
     const factory FunctionEndpoint.cloudEvent(
       String target,
       CloudEventHandler function,
  -  ) = CloudEventFunctionEndPoint;
  +  ) = _CloudEventFunctionEndPoint;
   }
   
  -class HttpFunctionEndPoint extends FunctionEndpoint {
  +class _HttpFunctionEndPoint extends FunctionEndpoint {
     final Handler function;
   
     @override
  
positive.code:   @override
    Handler get handler => function;
  
    const HttpFunctionEndPoint(String target, this.function) : super(target);
  }
  
  class CloudEventFunctionEndPoint extends FunctionEndpoint {
    final CloudEventHandler function;
  
    @override
  
negative.code:   @override
    Handler get handler => wrapCloudEventFunction(function);
  
    const _CloudEventFunctionEndPoint(String target, this.function)
        : super(target);
  }
  