*
	 * @param LLMS_Lesson $lesson The Lesson object.
	 * @return bool Whether the post can be read.
	 *
	 * @todo Implement read permission based on the section's id:
	 * 0 indicates an "orphaned" lesson which can be edited and viewed by instructors and admins but cannot be read by students.
	 */
	protected function check_read_permission( $lesson ) {

		/**
		 * As of now, lessons of password protected courses cannot be read
		 */
		if ( post_password_required( $lesson->get( 'parent_course' ) ) ) {
			return false;
		}