/// <summary>
 /// Sends the changes to the service -> Associates the Azure Key Vault key with the server
 /// </summary>
 /// <param name="entity">The Server Key</param>
 /// <returns>The Server Key added to the server</returns>
 protected override IEnumerable <AzureSqlServerKeyVaultKeyModel> PersistChanges(IEnumerable <AzureSqlServerKeyVaultKeyModel> entity)
 {
     return(new List <AzureSqlServerKeyVaultKeyModel>()
     {
         ModelAdapter.CreateOrUpdate(entity.First())
     });
 }