private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.memorystore.v1.CrossInstanceReplicationConfig,
            com.google.cloud.memorystore.v1.CrossInstanceReplicationConfig.Builder,
            com.google.cloud.memorystore.v1.CrossInstanceReplicationConfigOrBuilder>
        getCrossInstanceReplicationConfigFieldBuilder() {
      if (crossInstanceReplicationConfigBuilder_ == null) {
        crossInstanceReplicationConfigBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.memorystore.v1.CrossInstanceReplicationConfig,
                com.google.cloud.memorystore.v1.CrossInstanceReplicationConfig.Builder,
                com.google.cloud.memorystore.v1.CrossInstanceReplicationConfigOrBuilder>(
                getCrossInstanceReplicationConfig(), getParentForChildren(), isClean());
        crossInstanceReplicationConfig_ = null;
      }
      return crossInstanceReplicationConfigBuilder_;
    }
<pre>
Optional. The config for cross instance replication.
</pre>

<code>
.google.cloud.memorystore.v1.CrossInstanceReplicationConfig cross_instance_replication_config = 33 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/Instance.java