@java.lang.Override
    public boolean hasRdbSnapshotStartTime() {
      return ((bitField0_ & 0x00000001) != 0);
    }
<pre>
Optional. Time that the first snapshot was/will be attempted, and to
which future snapshots will be aligned. If not provided, the current time
will be used.
</pre>

<code>
.google.protobuf.Timestamp rdb_snapshot_start_time = 2 [(.google.api.field_behavior) = OPTIONAL];
</code>

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