public void RemoveRole(Role role)
{
if (Roles == null) return;
if (Roles.Contains(role))
Roles.Remove(role);
}
public void SetRole(Role role)
{
if (Roles == null)
Roles = new List<Role>();
Roles.Clear();
Roles.Add(role);
}
public void AddRole(Role role)
{
if (Roles == null)
Roles = new List<Role>();
Roles.Add(role);
}