learndash_course_get_single_parent_step( int $course_id, int $step_id, string $step_type = '' )
Gets the single parent step ID for a given step ID in a course.
learndash_course_get_single_parent_step( int $course_id, int $step_id, string $step_type = '' )
Gets the single parent step ID for a given step ID in a course.