@java.lang.Override
  public com.google.protobuf.ByteString getLatestWindowStartTimeBytes() {
    java.lang.Object ref = latestWindowStartTime_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      latestWindowStartTime_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }
<pre>
The latest time for the planned maintenance window to start.
This timestamp value is in RFC3339 text format.
</pre>

<code>optional string latest_window_start_time = 8;</code>

@return The bytes for latestWindowStartTime.
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/UpcomingMaintenance.java