def update_config(cls, valid=None):
preferences = Dict['preferences'] or {}
# If no validation provided, use last stored result or assume true
if valid is None:
valid = preferences.get('valid', True)
preferences['valid'] = valid
Configuration.process(preferences)
# Ensure preferences dictionary is stored
Dict['preferences'] = preferences
Dict.Save()
# Update plex.metadata.py `Matcher` preferences
Matcher.configure(
caper_enabled=preferences['matcher'] == 'plex_extended',
extend_enabled=preferences['matcher'] == 'plex_extended'
)
log.info('Preferences updated %s', preferences)
