MDL-77581 behat: Support finish_generate_ in generators

lib/behat/classes/behat_generator_base.php

@@ -279,6 +279,17 @@ abstract class behat_generator_base {
                         ' data generator is not implemented');
             }
         }
+
+        // Notify that the all the elements have been generated.
+        if (method_exists($this->componentdatagenerator, 'finish_generate_' . $generatortype)) {
+            // Using the component's own data generator if it exists.
+            $this->componentdatagenerator->{'finish_generate_' . $generatortype}();
+
+        } else if (method_exists($this->datagenerator, 'finish_generate_' . $generatortype)) {
+            // Use a method on the core data geneator, if there is one.
+            $this->datagenerator->{'finish_generate_' . $generatortype}();
+
+        }
     }
 
     /**

lib/upgrade.txt

@@ -6,6 +6,7 @@ information provided here is intended especially for developers.
 (via options.pending). This is a backport of patch MDL-78779.
 * Add a new parameter to the debounce (core/utils) function to allow for cancellation.
 * Add a new method core_user::get_initials to get the initials of a user in a way compatible with internationalisation.
+* Behat generators can now implement the function finish_generate_ to detect when the whole list of elements have been generated.
 
 === 4.2.3 ===
 * \moodle_page::set_title() has been updated to append the site name depending on the value of $CFG->sitenameintitle and whether