public class MyKeyVaultSecretManager : KeyVaultSecretManager
    {
        private string? _prefix;

        public MyKeyVaultSecretManager(string? prefix = null)
        {
            _prefix = prefix;
        }

        public override Dictionary<string, string> GetData(IEnumerable<KeyVaultSecret> secrets)
        {
            if (string.IsNullOrEmpty(_prefix))
                return base.GetData(secrets);
            else
                return base.GetData(secrets).ToDictionary(d => d.Key.Substring(_prefix.Length), d => d.Value);
        }

        /// <summary>
        /// Checks if <see cref="KeyVaultSecret"/> value should be retrieved.
        /// </summary>
        /// <param name="secret">The <see cref="SecretProperties"/> instance.</param>
        /// <returns><code>true</code> if secrets value should be loaded, otherwise <code>false</code>.</returns>
        public override bool Load(SecretProperties secret)
        {
            return string.IsNullOrEmpty(_prefix) || secret.Name.StartsWith(_prefix);
        }
    }