@Override
public Collection<RefreshResponse> refresh(String identifier, String[] args) throws IOException {
List<String> argList = Arrays.asList(args);
try {
GenericRefreshRequestProto request = GenericRefreshRequestProto.newBuilder()
.setIdentifier(identifier)
.addAllArgs(argList)
.build();
GenericRefreshResponseCollectionProto resp = rpcProxy.refresh(NULL_CONTROLLER, request);