code: @Override
      public SetStackPolicyResult setStackPolicy(SetStackPolicyRequest request) {
          request = beforeClientExecution(request);
          return executeSetStackPolicy(request);
      }
docs: <p>
  Sets a stack policy for a specified stack.
  </p>
  
  @param setStackPolicyRequest
  The input for the <a>SetStackPolicy</a> action.
  @return Result of the SetStackPolicy operation returned by the service.
  @sample AmazonCloudFormation.SetStackPolicy
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/cloudformation-2010-05-15/SetStackPolicy" target="_top">AWS
  API Documentation</a>