private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.memorystore.v1.AutomatedBackupConfig.FixedFrequencySchedule,
            com.google.cloud.memorystore.v1.AutomatedBackupConfig.FixedFrequencySchedule.Builder,
            com.google.cloud.memorystore.v1.AutomatedBackupConfig.FixedFrequencyScheduleOrBuilder>
        getFixedFrequencyScheduleFieldBuilder() {
      if (fixedFrequencyScheduleBuilder_ == null) {
        if (!(scheduleCase_ == 2)) {
          schedule_ =
              com.google.cloud.memorystore.v1.AutomatedBackupConfig.FixedFrequencySchedule
                  .getDefaultInstance();
        }
        fixedFrequencyScheduleBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.memorystore.v1.AutomatedBackupConfig.FixedFrequencySchedule,
                com.google.cloud.memorystore.v1.AutomatedBackupConfig.FixedFrequencySchedule
                    .Builder,
                com.google.cloud.memorystore.v1.AutomatedBackupConfig
                    .FixedFrequencyScheduleOrBuilder>(
                (com.google.cloud.memorystore.v1.AutomatedBackupConfig.FixedFrequencySchedule)
                    schedule_,
                getParentForChildren(),
                isClean());
        schedule_ = null;
      }
      scheduleCase_ = 2;
      onChanged();
      return fixedFrequencyScheduleBuilder_;
    }
<pre>
Optional. Trigger automated backups at a fixed frequency.
</pre>

<code>
.google.cloud.memorystore.v1.AutomatedBackupConfig.FixedFrequencySchedule fixed_frequency_schedule = 2 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/AutomatedBackupConfig.java