code: public alluxio.grpc.WritePType getWriteType() {
      alluxio.grpc.WritePType result = alluxio.grpc.WritePType.valueOf(writeType_);
      return result == null ? alluxio.grpc.WritePType.MUST_CACHE : result;
    }
docs: <code>optional .alluxio.grpc.file.WritePType writeType = 4;</code>