def _load_defaults(config):
    """Set config defaults."""
    config_defaults = config['Config'].get('Defaults', {})
    defaults = {}
    defaults['type'] = config_defaults.get('Type', 'list')
    defaults['source'] = config_defaults.get('Source', None)
    defaults['source_loader'] = config_defaults.get('SourceLoader', None)
    defaults['source_type'] = config_defaults.get('SourceType', None)
    defaults['randomizer'] = config_defaults.get('Randomizer', None)
    defaults['use_name_skp'] = config_defaults.get('UseNameForSourceKeyPath',
        None)
    return defaults
