text: public virtual DescribeVpcEndpointServiceConfigurationsResponse DescribeVpcEndpointServiceConfigurations(DescribeVpcEndpointServiceConfigurationsRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeVpcEndpointServiceConfigurationsRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeVpcEndpointServiceConfigurationsResponseUnmarshaller.Instance;return Invoke<DescribeVpcEndpointServiceConfigurationsResponse>(request, options);}