public void UpdateAlias(Alias alias)
 {
     try
     {
         db.Entry(alias).State = EntityState.Modified;
         db.SaveChanges();
     }
     catch
     {
         throw;
     }
 }
 public void UpdateTenant(Tenant tenant)
 {
     try
     {
         db.Entry(tenant).State = EntityState.Modified;
         db.SaveChanges();
     }
     catch
     {
         throw;
     }
 }