docs: public static String getWriteValueToField(FieldType type, String express, boolean isList) {
          if ((type == FieldType.STRING || type == FieldType.BYTES) && !isList) {
              String method = "copyFromUtf8";
              if (type == FieldType.BYTES) {
                  method = "copyFrom";
              }
  
              return "com.google.protobuf.ByteString." + method + "(" + express + ")";
          }
          
          return express;
      }