/// <summary>
/// Gets the configuration value by specific key.
/// </summary>
/// <param name="key">The configuration key.</param>
/// <returns>
/// The configuration value.
/// </returns>
/// <exception cref="ArgumentNullException">
/// Thrown if the given key is null.
/// </exception>
/// /// <exception cref="ArgumentException">
/// Thrown if the given key is empty or white space.
/// </exception>
public string GetValue(
string key,
ConfigType configType = ConfigType.GlobalSettings)
{
CheckUtility.NotNullNorEmptyNorWhiteSpace(nameof(key), key);
CheckUtility.IsDefinedEnumValue(nameof(configType), configType);
return(this.configProvider.GetValue(key, configType));
}