| AddAppSettings | Adds an IConfigurationSource for app settings to the given IConfigurationBuilder. |
| GetAppSettingDescription(IConfigurationSection) | Gets the description of the given app setting. |
| GetAppSettingDescription(IConfiguration, String) | Gets the description of the app setting with the given name. |
| GetAppSettingInitialValue(IConfigurationSection) | Gets the initial value of the given app setting. |
| GetAppSettingInitialValue(IConfiguration, String) | Gets the initial value of the app setting with the given name. |