public Builder setRepeatInterval(com.google.protobuf.Duration value) {
        if (repeatIntervalBuilder_ == null) {
          if (value == null) {
            throw new NullPointerException();
          }
          repeatInterval_ = value;
        } else {
          repeatIntervalBuilder_.setMessage(value);
        }
        bitField0_ |= 0x00000010;
        onChanged();
        return this;
      }
<pre>
Interval between the start of each scheduled TransferOperation. If
unspecified, the default value is 24 hours. This value may not be less than
1 hour.
</pre>

<code>.google.protobuf.Duration repeat_interval = 5;</code>
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java