public class User
extends com.google.common.collect.ForwardingSet<Role>
A digital representation of a person, system, or service who uses OpenStack cloud services.
Keystone authentication services will validate that incoming request are being made by the user
who claims to be making the call. Users have a login and may be assigned tokens to access users.
Users may be directly assigned to a particular tenant and behave as if they are contained in that
tenant.