Merge branch 'MDL-59779_master' of git://github.com/dmonllao/moodle

mod/survey/classes/analytics/indicator/activity_base.php

@@ -34,4 +34,13 @@ defined('MOODLE_INTERNAL') || die();
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 abstract class activity_base extends \core_analytics\local\indicator\community_of_inquiry_activity {
+
+    /**
+     * No need to fetch grades.
+     *
+     * @param \core_analytics\course $course
+     * @return void
+     */
+    public function fetch_student_grades(\core_analytics\course $course) {
+    }
 }