code: @Override
      public CreateUserResult createUser(CreateUserRequest request) {
          request = beforeClientExecution(request);
          return executeCreateUser(request);
      }
docs: <p>
  Creates a user.
  </p>
  
  @param createUserRequest
  @return Result of the CreateUser operation returned by the service.
  @throws ResourceInUseException
  The resource in the request is already in use.
  @throws LimitExceededException
  You are performing an action that would put you beyond your account's limits.
  @throws ConcurrentModificationException
  There is a concurrent modification of resources.
  @sample AmazonAlexaForBusiness.CreateUser
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/alexaforbusiness-2017-11-09/CreateUser" target="_top">AWS
  API Documentation</a>