Method has_bool_value

libapp2sys/prebuilt/include/google/protobuf/struct.pb.h:691–693

optional bool bool_value = 4;

// optional bool bool_value = 4;
inline bool Value::has_bool_value() const {
  return kind_case() == kBoolValue;
}
inline void Value::set_has_bool_value() {
  _oneof_case_[0] = kBoolValue;
}