/// <summary>
/// Tries to get a configuration value for the specified key.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns><c>True</c> if a value for the specified key was found, otherwise <c>false</c>.</returns>
public bool TryGet(string key, out string value)
{
value = _substitutor.GetSubstituted(_config, key);
return(!string.IsNullOrEmpty(value));
}
