public Builder mergeScheduleTime(com.google.protobuf.Timestamp value) {
      if (scheduleTimeBuilder_ == null) {
        if (((bitField0_ & 0x00000004) != 0)
            && scheduleTime_ != null
            && scheduleTime_ != com.google.protobuf.Timestamp.getDefaultInstance()) {
          getScheduleTimeBuilder().mergeFrom(value);
        } else {
          scheduleTime_ = value;
        }
      } else {
        scheduleTimeBuilder_.mergeFrom(value);
      }
      if (scheduleTime_ != null) {
        bitField0_ |= 0x00000004;
        onChanged();
      }
      return this;
    }
<pre>
Optional. Timestamp when the maintenance shall be rescheduled to if
reschedule_type=SPECIFIC_TIME, in RFC 3339 format.
Example: `2012-11-15T16:19:00.094Z`.
</pre>

<code>.google.protobuf.Timestamp schedule_time = 3 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/RescheduleMaintenanceRequest.java