private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.memorystore.v1.MaintenanceSchedule,
            com.google.cloud.memorystore.v1.MaintenanceSchedule.Builder,
            com.google.cloud.memorystore.v1.MaintenanceScheduleOrBuilder>
        getMaintenanceScheduleFieldBuilder() {
      if (maintenanceScheduleBuilder_ == null) {
        maintenanceScheduleBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.memorystore.v1.MaintenanceSchedule,
                com.google.cloud.memorystore.v1.MaintenanceSchedule.Builder,
                com.google.cloud.memorystore.v1.MaintenanceScheduleOrBuilder>(
                getMaintenanceSchedule(), getParentForChildren(), isClean());
        maintenanceSchedule_ = null;
      }
      return maintenanceScheduleBuilder_;
    }
<pre>
Output only. Published maintenance schedule.
</pre>

<code>
.google.cloud.memorystore.v1.MaintenanceSchedule maintenance_schedule = 32 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/Instance.java