LLMS_REST_Lessons_Controller::prepare_item_for_database()
Method: Prepares a single lesson for create or update.
Source: libraries/lifterlms-rest/includes/server/class-llms-rest-lessons-controller.php:116
LLMS_REST_Lessons_Controller::get_item_schema()
Method: Get the Lesson’s schema, conforming to JSON Schema.
Source: libraries/lifterlms-rest/includes/server/class-llms-rest-lessons-controller.php:308