private void buildPartial0(
          com.google.storagetransfer.v1.proto.TransferTypes.Schedule result) {
        int from_bitField0_ = bitField0_;
        int to_bitField0_ = 0;
        if (((from_bitField0_ & 0x00000001) != 0)) {
          result.scheduleStartDate_ =
              scheduleStartDateBuilder_ == null
                  ? scheduleStartDate_
                  : scheduleStartDateBuilder_.build();
          to_bitField0_ |= 0x00000001;
        }
        if (((from_bitField0_ & 0x00000002) != 0)) {
          result.scheduleEndDate_ =
              scheduleEndDateBuilder_ == null ? scheduleEndDate_ : scheduleEndDateBuilder_.build();
          to_bitField0_ |= 0x00000002;
        }
        if (((from_bitField0_ & 0x00000004) != 0)) {
          result.startTimeOfDay_ =
              startTimeOfDayBuilder_ == null ? startTimeOfDay_ : startTimeOfDayBuilder_.build();
          to_bitField0_ |= 0x00000004;
        }
        if (((from_bitField0_ & 0x00000008) != 0)) {
          result.endTimeOfDay_ =
              endTimeOfDayBuilder_ == null ? endTimeOfDay_ : endTimeOfDayBuilder_.build();
          to_bitField0_ |= 0x00000008;
        }
        if (((from_bitField0_ & 0x00000010) != 0)) {
          result.repeatInterval_ =
              repeatIntervalBuilder_ == null ? repeatInterval_ : repeatIntervalBuilder_.build();
          to_bitField0_ |= 0x00000010;
        }
        result.bitField0_ |= to_bitField0_;
      }
<pre>
Transfers can be scheduled to recur or to run just once.
</pre>

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