private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.memorystore.v1.PersistenceConfig.RDBConfig,
            com.google.cloud.memorystore.v1.PersistenceConfig.RDBConfig.Builder,
            com.google.cloud.memorystore.v1.PersistenceConfig.RDBConfigOrBuilder>
        getRdbConfigFieldBuilder() {
      if (rdbConfigBuilder_ == null) {
        rdbConfigBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.memorystore.v1.PersistenceConfig.RDBConfig,
                com.google.cloud.memorystore.v1.PersistenceConfig.RDBConfig.Builder,
                com.google.cloud.memorystore.v1.PersistenceConfig.RDBConfigOrBuilder>(
                getRdbConfig(), getParentForChildren(), isClean());
        rdbConfig_ = null;
      }
      return rdbConfigBuilder_;
    }
<pre>
Optional. RDB configuration. This field will be ignored if mode is not RDB.
</pre>

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