Config::clear in core/includes/config.inc

Unsets a value in this configuration object.

Config::getOriginal in core/includes/config.inc

Gets the current config value as specified in the written config storage.

Config::isNew in core/includes/config.inc

Returns whether this configuration object is new.

Config::save in core/includes/config.inc

Saves the configuration object.

Config::set in core/includes/config.inc

Sets a value in this configuration object.