public void RemoveClaim(CustomUserClaim claim)
 {
     foreach (var customUserClaim in claims.Where(c => c.Type.Equals(claim.Type, StringComparison.OrdinalIgnoreCase) && StringEqual(c.Type, claim.Type)))
     {
         claims.Remove(customUserClaim);
     }
 }
 public void AddClaim(CustomUserClaim claim)
 {
     claims.Add(claim);
 }