private void buildPartial0(
          com.google.storagetransfer.v1.proto.TransferTypes.TransferOperation result) {
        int from_bitField0_ = bitField0_;
        if (((from_bitField0_ & 0x00000001) != 0)) {
          result.name_ = name_;
        }
        if (((from_bitField0_ & 0x00000002) != 0)) {
          result.projectId_ = projectId_;
        }
        int to_bitField0_ = 0;
        if (((from_bitField0_ & 0x00000004) != 0)) {
          result.transferSpec_ =
              transferSpecBuilder_ == null ? transferSpec_ : transferSpecBuilder_.build();
          to_bitField0_ |= 0x00000001;
        }
        if (((from_bitField0_ & 0x00000008) != 0)) {
          result.notificationConfig_ =
              notificationConfigBuilder_ == null
                  ? notificationConfig_
                  : notificationConfigBuilder_.build();
          to_bitField0_ |= 0x00000002;
        }
        if (((from_bitField0_ & 0x00000010) != 0)) {
          result.loggingConfig_ =
              loggingConfigBuilder_ == null ? loggingConfig_ : loggingConfigBuilder_.build();
          to_bitField0_ |= 0x00000004;
        }
        if (((from_bitField0_ & 0x00000020) != 0)) {
          result.startTime_ = startTimeBuilder_ == null ? startTime_ : startTimeBuilder_.build();
          to_bitField0_ |= 0x00000008;
        }
        if (((from_bitField0_ & 0x00000040) != 0)) {
          result.endTime_ = endTimeBuilder_ == null ? endTime_ : endTimeBuilder_.build();
          to_bitField0_ |= 0x00000010;
        }
        if (((from_bitField0_ & 0x00000080) != 0)) {
          result.status_ = status_;
        }
        if (((from_bitField0_ & 0x00000100) != 0)) {
          result.counters_ = countersBuilder_ == null ? counters_ : countersBuilder_.build();
          to_bitField0_ |= 0x00000020;
        }
        if (((from_bitField0_ & 0x00000400) != 0)) {
          result.transferJobName_ = transferJobName_;
        }
        result.bitField0_ |= to_bitField0_;
      }
<pre>
A description of the execution of a transfer.
</pre>

Protobuf type {@code google.storagetransfer.v1.TransferOperation}
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java