* Supports nested settings with dot separated keys.
*
* @param string $setting Asked setting, keys separated with dots.
* Supports nested settings with dot separated keys.
*
* @param string $setting Asked setting, keys separated with dots.
* @param bool $write Write the new setting in the config file, default false.
* @param bool $isLoggedIn User login state, default false.
*
* @param bool $write Write the new setting in the config file, default false.
* @param bool $isLoggedIn User login state, default false.
*