@java.lang.Override
  public boolean hasMaintenancePolicy() {
    return ((bitField0_ & 0x00000200) != 0);
  }
<pre>
Optional. The maintenance policy for the instance. If not provided,
the maintenance event will be performed based on Memorystore
internal rollout schedule.
</pre>

<code>
.google.cloud.memorystore.v1.MaintenancePolicy maintenance_policy = 31 [(.google.api.field_behavior) = OPTIONAL];
</code>

@return Whether the maintenancePolicy field is set.
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/Instance.java