public void invoke(ClientCallback callback,
QName operationName,
Object... params) throws Exception {
BindingOperationInfo op = getEndpoint().getEndpointInfo().getBinding().getOperation(operationName);
if (op == null) {
throw new UncheckedException(
new org.apache.cxf.common.i18n.Message("NO_OPERATION", LOG, operationName));
}
if (op.isUnwrappedCapable()) {
op = op.getUnwrappedOperation();