code: @Override
      public UntagDeliveryStreamResult untagDeliveryStream(UntagDeliveryStreamRequest request) {
          request = beforeClientExecution(request);
          return executeUntagDeliveryStream(request);
      }
docs: <p>
  Removes tags from the specified delivery stream. Removed tags are deleted, and you can't recover them after this
  operation successfully completes.
  </p>
  <p>
  If you specify a tag that doesn't exist, the operation ignores it.
  </p>
  <p>
  This operation has a limit of five transactions per second per account.
  </p>
  
  @param untagDeliveryStreamRequest
  @return Result of the UntagDeliveryStream operation returned by the service.
  @throws ResourceNotFoundException
  The specified resource could not be found.
  @throws ResourceInUseException
  The resource is already in use and not available for this operation.
  @throws InvalidArgumentException
  The specified input parameter has a value that is not valid.
  @throws LimitExceededException
  You have already reached the limit for a requested resource.
  @sample AmazonKinesisFirehose.UntagDeliveryStream
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/firehose-2015-08-04/UntagDeliveryStream" target="_top">AWS
  API Documentation</a>