@java.lang.Override
    public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
      if (appendFsync_
          != com.google.cloud.memorystore.v1.PersistenceConfig.AOFConfig.AppendFsync
              .APPEND_FSYNC_UNSPECIFIED
              .getNumber()) {
        output.writeEnum(1, appendFsync_);
      }
      getUnknownFields().writeTo(output);
    }
<pre>
Optional. The fsync mode.
</pre>

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

@return The appendFsync.
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/PersistenceConfig.java