MDL-48707 mod_lesson: ignore plugins question types during import

mod/lesson/format.php

@@ -321,6 +321,20 @@ class qformat_default {
         echo "</div>";
     }
 
+    /**
+     * Import for questiontype plugins
+     * @param mixed $data The segment of data containing the question
+     * @param object $question processed (so far) by standard import code if appropriate
+     * @param object $extra mixed any additional format specific data that may be passed by the format
+     * @param string $qtypehint hint about a question type from format
+     * @return object question object suitable for save_options() or false if cannot handle
+     */
+    public function try_importing_using_qtypes($data, $question = null, $extra = null,
+            $qtypehint = '') {
+
+        return false;
+    }
+
     function importpreprocess() {
         // Does any pre-processing that may be desired
         return true;