code: @Override
      public UntagStreamResult untagStream(UntagStreamRequest request) {
          request = beforeClientExecution(request);
          return executeUntagStream(request);
      }
docs: <p>
  Removes one or more tags from a stream. In the request, specify only a tag key or keys; don't specify the value.
  If you specify a tag key that does not exist, it's ignored.
  </p>
  <p>
  In the request, you must provide the <code>StreamName</code> or <code>StreamARN</code>.
  </p>
  
  @param untagStreamRequest
  @return Result of the UntagStream operation returned by the service.
  @throws ClientLimitExceededException
  Kinesis Video Streams has throttled the request because you have exceeded the limit of allowed client
  calls. Try making the call later.
  @throws InvalidArgumentException
  The value for this input parameter is invalid.
  @throws ResourceNotFoundException
  Amazon Kinesis Video Streams can't find the stream that you specified.
  @throws NotAuthorizedException
  The caller is not authorized to perform this operation.
  @throws InvalidResourceFormatException
  The format of the <code>StreamARN</code> is invalid.
  @sample AmazonKinesisVideo.UntagStream
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/kinesisvideo-2017-09-30/UntagStream" target="_top">AWS API
  Documentation</a>