is_courses()
Function: Determine if the course catalog (post type archive) is being displayed.
Source: includes/functions/llms-functions-conditional-tags.php:82
LLMS_Query::pre_get_posts()
Method: Sets the WP_Query variables for “post_type” on LifterLMS custom taxonomy archive pages for Courses and Memberships.
Source: includes/class.llms.query.php:191
LLMS_Shortcodes::memberships()
Method: Memberships Shortcode
Source: includes/shortcodes/class.llms.shortcodes.php:316