code: @Override
      public GetTagValuesResult getTagValues(GetTagValuesRequest request) {
          request = beforeClientExecution(request);
          return executeGetTagValues(request);
      }
docs: <p>
  Returns all tag values for the specified key in the specified region for the AWS account.
  </p>
  
  @param getTagValuesRequest
  @return Result of the GetTagValues operation returned by the service.
  @throws InvalidParameterException
  A parameter is missing or a malformed string or invalid or out-of-range value was supplied for the
  request parameter.
  @throws ThrottledException
  The request was denied to limit the frequency of submitted requests.
  @throws InternalServiceException
  The request processing failed because of an unknown error, exception, or failure. You can retry the
  request.
  @throws PaginationTokenExpiredException
  A <code>PaginationToken</code> is valid for a maximum of 15 minutes. Your request was denied because the
  specified <code>PaginationToken</code> has expired.
  @sample AWSResourceGroupsTaggingAPI.GetTagValues
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/resourcegroupstaggingapi-2017-01-26/GetTagValues"
  target="_top">AWS API Documentation</a>