Issue #3437286 by immaculatexavier, longwave: Use argument unpacking in...

Issue #3437286 by immaculatexavier, longwave: Use argument unpacking in FieldItemList::delegateMethod()

core/lib/Drupal/Core/Field/FieldItemList.php

@@ -220,19 +220,14 @@ public function deleteRevision() {
    *
    * @param string $method
    *   The name of the method to be invoked.
+   * @param mixed ...$args
+   *   Any arguments to be forwarded to the invoked method.
    *
    * @return array
    *   An array of results keyed by delta.
    */
-  protected function delegateMethod($method) {
-    $result = [];
-    $args = array_slice(func_get_args(), 1);
-    foreach ($this->list as $delta => $item) {
-      // call_user_func_array() is way slower than a direct call so we avoid
-      // using it if have no parameters.
-      $result[$delta] = $args ? call_user_func_array([$item, $method], $args) : $item->{$method}();
-    }
-    return $result;
+  protected function delegateMethod($method, ...$args) {
+    return array_map(fn($item) => $item->{$method}(...$args), $this->list);
   }
 
   /**