code: @Override
      public SetSubscriptionAttributesResult setSubscriptionAttributes(SetSubscriptionAttributesRequest request) {
          request = beforeClientExecution(request);
          return executeSetSubscriptionAttributes(request);
      }
docs: <p>
  Allows a subscription owner to set an attribute of the subscription to a new value.
  </p>
  
  @param setSubscriptionAttributesRequest
  Input for SetSubscriptionAttributes action.
  @return Result of the SetSubscriptionAttributes operation returned by the service.
  @throws InvalidParameterException
  Indicates that a request parameter does not comply with the associated constraints.
  @throws FilterPolicyLimitExceededException
  Indicates that the number of filter polices in your AWS account exceeds the limit. To add more filter
  polices, submit an SNS Limit Increase case in the AWS Support Center.
  @throws InternalErrorException
  Indicates an internal service error.
  @throws NotFoundException
  Indicates that the requested resource does not exist.
  @throws AuthorizationErrorException
  Indicates that the user has been denied access to the requested resource.
  @sample AmazonSNS.SetSubscriptionAttributes
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/sns-2010-03-31/SetSubscriptionAttributes" target="_top">AWS
  API Documentation</a>