Prepare for moving into monorepo

src/Bundle/ChillBudgetBundle/Calculator/CalculatorInterface.php

@@ -0,0 +1,22 @@
+<?php
+/*
+ * 
+ */
+namespace Chill\AMLI\BudgetBundle\Calculator;
+
+use Chill\AMLI\BudgetBundle\Entity\AbstractElement;
+
+/**
+ *
+ * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ */
+interface CalculatorInterface
+{
+    /**
+     * 
+     * @param AbstractElement[] $elements
+     */
+    public function calculate(array $elements) : ?CalculatorResult;
+    
+    public function getAlias();
+}