--- /dev/null
+<?php
+
+namespace Drupal\field_test;
+
+/**
+ * Helper class for \Drupal\Tests\field\Functional\FieldDefaultValueCallbackTest.
+ */
+class FieldDefaultValueCallbackProvider {
+
+ /**
+ * Helper callback calculating a default value.
+ */
+ public static function calculateDefaultValue() {
+ return [['value' => 'Calculated default value']];
+ }
+
+}