@classmethod<EOL><INDENT>def loadCustomConfig(cls):<DEDENT>
cls.readConfigFile(_CustomConfigurationFileWrapper.customFileName)<EOL>
Loads custom configuration settings from their persistent storage.
        DO NOT CALL THIS: It's typically not necessary to call this method
        directly - see NOTE below.

        NOTE: this method exists *solely* for the benefit of prepare_conf.py, which
        needs to load configuration files selectively.