code: @Override
      public CheckIfPhoneNumberIsOptedOutResult checkIfPhoneNumberIsOptedOut(CheckIfPhoneNumberIsOptedOutRequest request) {
          request = beforeClientExecution(request);
          return executeCheckIfPhoneNumberIsOptedOut(request);
      }
docs: <p>
  Accepts a phone number and indicates whether the phone holder has opted out of receiving SMS messages from your
  account. You cannot send SMS messages to a number that is opted out.
  </p>
  <p>
  To resume sending messages, you can opt in the number by using the <code>OptInPhoneNumber</code> action.
  </p>
  
  @param checkIfPhoneNumberIsOptedOutRequest
  The input for the <code>CheckIfPhoneNumberIsOptedOut</code> action.
  @return Result of the CheckIfPhoneNumberIsOptedOut operation returned by the service.
  @throws ThrottledException
  Indicates that the rate at which requests have been submitted for this action exceeds the limit for your
  account.
  @throws InternalErrorException
  Indicates an internal service error.
  @throws AuthorizationErrorException
  Indicates that the user has been denied access to the requested resource.
  @throws InvalidParameterException
  Indicates that a request parameter does not comply with the associated constraints.
  @sample AmazonSNS.CheckIfPhoneNumberIsOptedOut
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/sns-2010-03-31/CheckIfPhoneNumberIsOptedOut"
  target="_top">AWS API Documentation</a>