@Override
    public Future<Message> removeLearners(final Endpoint endpoint, final RemoveLearnersRequest request,
                                          final RpcResponseClosure<LearnersOpResponse> done) {
        return invokeWithDone(endpoint, request, done, this.cliOptions.getTimeoutMs());
    }
@author boyan (boyan@alibaba-inc.com)
@author jiachun.fjc
jraft-core/src/main/java/com/alipay/sofa/jraft/rpc/impl/cli/CliClientServiceImpl.java