Retrieves information about the specified user, including the user's path, unique ID, and ARN.
If you do not specify a user name, IAM determines the user name implicitly based on the AWS access key ID signing the request.
The response from the GetUser service method, as returned by IdentityManagementService.
Assembly: AWSSDK (Module: AWSSDK) Version: 188.8.131.52 (184.108.40.206)
The request was rejected because it referenced an entity that does not exist. The
error message describes the entity.