@java.lang.Override
      public final Builder setUnknownFields(
          final com.google.protobuf.UnknownFieldSet unknownFields) {
        return super.setUnknownFields(unknownFields);
      }
<pre>
Optional. The fsync mode.
</pre>

<code>
.google.cloud.memorystore.v1.PersistenceConfig.AOFConfig.AppendFsync append_fsync = 1 [(.google.api.field_behavior) = OPTIONAL];
</code>

@return This builder for chaining.
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/PersistenceConfig.java