public function prepare_links( $enrollment, $request ) {

		$links = array(
			'self'       => array(
				'href' => rest_url(
					sprintf( '/%s/%s/%d/%s/%d', 'llms/v1', 'students', $enrollment->student_id, 'enrollments', $enrollment->post_id )
				),
			),
			'collection' => array(
				'href' => rest_url(
					sprintf( '/%s/%s/%d/%s', 'llms/v1', 'students', $enrollment->student_id, 'enrollments' )
				),
			),
			'student'    => array(
				'href' => rest_url(
					sprintf( '/%s/%s/%d', 'llms/v1', 'students', $enrollment->student_id )
				),
			),
		);

		switch ( get_post_type( $enrollment->post_id ) ) :
			case 'course':
				$links['post'] = array(
					'type' => 'course',
					'href' => rest_url(
						sprintf( '/%s/%s/%d', 'llms/v1', 'courses', $enrollment->post_id )
					),
				);
				break;

			case 'llms_membership':
				$links['post'] = array(
					'type' => 'llms_membership',
					'href' => rest_url(
						sprintf( '/%s/%s/%d', 'llms/v1', 'memberships', $enrollment->post_id )
					),
				);
				break;
		endswitch;

		/**
		 * Filters the enrollment's links.
		 *
		 * @since 1.0.0-beta.10
		 *
		 * @param array    $links      Links for the given enrollment.
		 * @param stdClass $enrollment Enrollment object.
		 */
		return apply_filters( 'llms_rest_enrollment_links', $links, $enrollment );

	}