  void readRawInto(bool& b, FieldType fieldType) {
    DCHECK(fieldType == FieldType::True || fieldType == FieldType::False)
        << "Invalid fieldType: " << static_cast<uint8_t>(fieldType);
    b = fieldType == FieldType::True;
  }
  void readRawInto(bool& b, FieldType fieldType) {
    DCHECK(fieldType == FieldType::True || fieldType == FieldType::False)
        << "Invalid fieldType: " << static_cast<uint8_t>(fieldType);
    b = fieldType == FieldType::True;
  }