* @param LLMS_Section    $section LLMS Section.
	 * @param WP_REST_Request $request Request object.
	 * @return array Links for the given object.
	 */
	protected function prepare_links( $section, $request ) {

		$links            = parent::prepare_links( $section, $request );
		$parent_course_id = $section->get( 'parent_course' );

		// If the section has no course parent return earlier.
		if ( ! $parent_course_id ) {
			return $links;
		}

		$parent_course = llms_get_post( $parent_course_id );
		if ( ! is_a( $parent_course, 'LLMS_Course' ) ) {
			return $links;
		}

		$section_id    = $section->get( 'id' );
		$section_links = array();

		// Parent (course).
		$section_links['parent'] = array(
			'type' => 'course',
			'href' => rest_url( sprintf( '/%s/%s/%d', 'llms/v1', 'courses', $parent_course_id ) ),
		);

		// Siblings.
		$section_links['siblings'] = array(
			'href' => add_query_arg(
				'parent',
				$parent_course_id,
				$links['collection']['href']
			),
		);

		// Next.
		$next_section = $section->get_next();
		if ( $next_section ) {
			$section_links['next'] = array(
				'href' => rest_url( sprintf( '/%s/%s/%d', $this->namespace, $this->rest_base, $next_section->get( 'id' ) ) ),
			);
		}

		// Previous.
		$previous_section = $section->get_previous();
		if ( $previous_section ) {
			$section_links['previous'] = array(
				'href' => rest_url( sprintf( '/%s/%s/%d', $this->namespace, $this->rest_base, $previous_section->get( 'id' ) ) ),
			);