我正在使用以下具有1.0.0-beta2版本的Azure客户端，
ComputeManagementClientImpl客户端=新的ComputeManagementClientImpl（凭证）;
ResourceManagementClient resourceManagementClient = new ResourceManagementClientImpl（credentials）;
NetworkManagementClientImpl networkClient =新的NetworkManagementClientImpl（凭证）;
StorageManagementClientImpl storageManagementClient =新的StorageManagementClientImpl（凭证）;
如何为以下客户端配置代理？