Build administration-compatible budget chart.

app/Repositories/Administration/Budget/BudgetRepositoryInterface.php

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+<?php
+
+declare(strict_types=1);
+/*
+ * BudgetRepositoryInterface.php
+ * Copyright (c) 2023 james@firefly-iii.org
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace FireflyIII\Repositories\Administration\Budget;
+
+use Illuminate\Support\Collection;
+
+/**
+ * Interface BudgetRepositoryInterface
+ */
+interface BudgetRepositoryInterface
+{
+    /**
+     * @return Collection
+     */
+    public function getActiveBudgets(): Collection;
+}