learndash_course_get_children_of_step()
Function: Gets the list of children steps for a given step ID.
@since: 2.5.0
@package: LearnDash / Course_Steps
Source Files: includes/course/ld-course-steps-functions.php
@package: LearnDash / Course_Steps
Source Files: includes/course/ld-course-steps-functions.php