*/
private $tx = NULL;
+ /**
+ * Array of IDs created to support the test.
+ *
+ * e.g
+ * $this->ids = ['Contact' => ['descriptive_key' => $contactID], 'Group' => [$groupID]];
+ *
+ * @var array
+ */
+ protected $ids = [];
+
/**
* Class used for hooks during tests.
*