code: @Override
      public CreateLogStreamResult createLogStream(CreateLogStreamRequest request) {
          request = beforeClientExecution(request);
          return executeCreateLogStream(request);
      }
docs: <p>
  Creates a log stream for the specified log group.
  </p>
  <p>
  There is no limit on the number of log streams that you can create for a log group.
  </p>
  <p>
  You must use the following guidelines when naming a log stream:
  </p>
  <ul>
  <li>
  <p>
  Log stream names must be unique within the log group.
  </p>
  </li>
  <li>
  <p>
  Log stream names can be between 1 and 512 characters long.
  </p>
  </li>
  <li>
  <p>
  The ':' (colon) and '*' (asterisk) characters are not allowed.
  </p>
  </li>
  </ul>
  
  @param createLogStreamRequest
  @return Result of the CreateLogStream operation returned by the service.
  @throws InvalidParameterException
  A parameter is specified incorrectly.
  @throws ResourceAlreadyExistsException
  The specified resource already exists.
  @throws ResourceNotFoundException
  The specified resource does not exist.
  @throws ServiceUnavailableException
  The service cannot complete the request.
  @sample AWSLogs.CreateLogStream
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/logs-2014-03-28/CreateLogStream" target="_top">AWS API
  Documentation</a>