code: @Override
      public CreateRoleResult createRole(CreateRoleRequest request) {
          request = beforeClientExecution(request);
          return executeCreateRole(request);
      }
docs: <p>
  Creates a new role for your AWS account. For more information about roles, go to <a
  href="https://docs.aws.amazon.com/IAM/latest/UserGuide/WorkingWithRoles.html">IAM Roles</a>. For information
  about limitations on role names and the number of roles you can create, go to <a
  href="https://docs.aws.amazon.com/IAM/latest/UserGuide/LimitationsOnEntities.html">Limitations on IAM
  Entities</a> in the <i>IAM User Guide</i>.
  </p>
  
  @param createRoleRequest
  @return Result of the CreateRole operation returned by the service.
  @throws LimitExceededException
  The request was rejected because it attempted to create resources beyond the current AWS account limits.
  The error message describes the limit exceeded.
  @throws InvalidInputException
  The request was rejected because an invalid or out-of-range value was supplied for an input parameter.
  @throws EntityAlreadyExistsException
  The request was rejected because it attempted to create a resource that already exists.
  @throws MalformedPolicyDocumentException
  The request was rejected because the policy document was malformed. The error message describes the
  specific error.
  @throws ConcurrentModificationException
  The request was rejected because multiple requests to change this object were submitted simultaneously.
  Wait a few minutes and submit your request again.
  @throws ServiceFailureException
  The request processing has failed because of an unknown error, exception or failure.
  @sample AmazonIdentityManagement.CreateRole
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/iam-2010-05-08/CreateRole" target="_top">AWS API
  Documentation</a>