code: public static <T> void mergeFrom(MessageBufferInput in, T message, Schema<T> schema, boolean numeric) throws IOException
      {
  
          MessageUnpacker unpacker = MessagePack.newDefaultUnpacker(in);
  
          try
          {
              mergeFrom(unpacker, message, schema, numeric);
          }
          finally
          {
              unpacker.close();
          }
      }
docs: Merges the {@code message} from the {@link MessageBufferInput} using the given {@code schema}.