text: public virtual DescribeIAMPolicyAssignmentResponse DescribeIAMPolicyAssignment(DescribeIAMPolicyAssignmentRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeIAMPolicyAssignmentRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeIAMPolicyAssignmentResponseUnmarshaller.Instance;return Invoke<DescribeIAMPolicyAssignmentResponse>(request, options);}