Method FindField

internal/json.cc:1451–1452

  virtual int FieldsSize(const google::protobuf::MessageLite& message) const = 0;

  virtual const google::protobuf::MessageLite* absl_nullable FindField(
      const google::protobuf::MessageLite& message, absl::string_view name) const = 0;

  virtual JsonMapIterator IterateFields(
      const google::protobuf::MessageLite& message) const = 0;