public ListenableFuture<DOMRpcResult> invokeRpc(final DOMRpcIdentifier rpc, final NormalizedNode input) {
LOG.debug("get-singleton-constant invoked, current value: {}", constant);
public ListenableFuture<DOMRpcResult> invokeRpc(final DOMRpcIdentifier rpc, final NormalizedNode input) {
LOG.debug("get-singleton-constant invoked, current value: {}", constant);