public Builder mergeFrom(
          com.google.storagetransfer.v1.proto.TransferTypes.TransferOperation other) {
        if (other
            == com.google.storagetransfer.v1.proto.TransferTypes.TransferOperation
                .getDefaultInstance()) return this;
        if (!other.getName().isEmpty()) {
          name_ = other.name_;
          bitField0_ |= 0x00000001;
          onChanged();
        }
        if (!other.getProjectId().isEmpty()) {
          projectId_ = other.projectId_;
          bitField0_ |= 0x00000002;
          onChanged();
        }
        if (other.hasTransferSpec()) {
          mergeTransferSpec(other.getTransferSpec());
        }
        if (other.hasNotificationConfig()) {
          mergeNotificationConfig(other.getNotificationConfig());
        }
        if (other.hasLoggingConfig()) {
          mergeLoggingConfig(other.getLoggingConfig());
        }
        if (other.hasStartTime()) {
          mergeStartTime(other.getStartTime());
        }
        if (other.hasEndTime()) {
          mergeEndTime(other.getEndTime());
        }
        if (other.status_ != 0) {
          setStatusValue(other.getStatusValue());
        }
        if (other.hasCounters()) {
          mergeCounters(other.getCounters());
        }
        if (errorBreakdownsBuilder_ == null) {
          if (!other.errorBreakdowns_.isEmpty()) {
            if (errorBreakdowns_.isEmpty()) {
              errorBreakdowns_ = other.errorBreakdowns_;
              bitField0_ = (bitField0_ & ~0x00000200);
            } else {
              ensureErrorBreakdownsIsMutable();
              errorBreakdowns_.addAll(other.errorBreakdowns_);
            }
            onChanged();
          }
        } else {
          if (!other.errorBreakdowns_.isEmpty()) {
            if (errorBreakdownsBuilder_.isEmpty()) {
              errorBreakdownsBuilder_.dispose();
              errorBreakdownsBuilder_ = null;
              errorBreakdowns_ = other.errorBreakdowns_;
              bitField0_ = (bitField0_ & ~0x00000200);
              errorBreakdownsBuilder_ =
                  com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders
                      ? getErrorBreakdownsFieldBuilder()
                      : null;
            } else {
              errorBreakdownsBuilder_.addAllMessages(other.errorBreakdowns_);
            }
          }
        }
        if (!other.getTransferJobName().isEmpty()) {
          transferJobName_ = other.transferJobName_;
          bitField0_ |= 0x00000400;
          onChanged();
        }
        this.mergeUnknownFields(other.getUnknownFields());
        onChanged();
        return this;
      }
<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