code: @Override
      public DeleteChannelResult deleteChannel(DeleteChannelRequest request) {
          request = beforeClientExecution(request);
          return executeDeleteChannel(request);
      }
docs: Deletes an existing Channel.
  
  @param deleteChannelRequest
  @return Result of the DeleteChannel operation returned by the service.
  @throws UnprocessableEntityException
  The parameters sent in the request are not valid.
  @throws InternalServerErrorException
  An unexpected error occurred.
  @throws ForbiddenException
  The client is not authorized to access the requested resource.
  @throws NotFoundException
  The requested resource does not exist.
  @throws ServiceUnavailableException
  An unexpected error occurred.
  @throws TooManyRequestsException
  The client has exceeded their resource or throttling limits.
  @sample AWSMediaPackage.DeleteChannel
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/mediapackage-2017-10-12/DeleteChannel" target="_top">AWS API
  Documentation</a>