Piggy bank can now have a group.

app/Repositories/ObjectGroup/ObjectGroupRepositoryInterface.php

@@ -0,0 +1,25 @@
+<?php
+declare(strict_types=1);
+
+namespace FireflyIII\Repositories\ObjectGroup;
+
+use Illuminate\Support\Collection;
+
+/**
+ * Interface ObjectGroupRepositoryInterface
+ */
+interface ObjectGroupRepositoryInterface
+{
+    /**
+     * @return Collection
+     */
+    public function get(): Collection;
+
+    /**
+     * @param string $query
+     *
+     * @return Collection
+     */
+    public function search(string $query): Collection;
+
+}