public AspRole CreateRole(string roleName)
 {
     if (RoleDataMock.FindByName(roleName) != null) return null;
     var role = new AspRole
     {
         Name = roleName
     };
     RoleDataMock.Add(role);
     return role;
 }
 public static void Add(AspRole role)
 {
     _roles.Add(role);
 }