def main(self, config_filename, file_names=None):
self._io.title('<STR_LIT>')<EOL>if file_names:<EOL><INDENT>self.__load_list(config_filename, file_names)<EOL><DEDENT>else:<EOL><INDENT>self.__load_all(config_filename)<EOL><DEDENT>if self.error_file_names:<EOL><INDENT>self.__log_overview_errors()<EOL>return <NUM_LIT:1><EOL><DEDENT>else:<EOL><INDENT>return <NUM_LIT:0><EOL><DEDENT>
Loads stored routines into the current schema.

:param str config_filename: The name of the configuration file of the current project
:param list[str] file_names: The sources that must be loaded. If empty all sources (if required) will loaded.

:rtype: int The status of exit.