🐞 fix: Error cleanup, add test harness

vendor/myclabs/deep-copy/src/DeepCopy/Matcher/Matcher.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace DeepCopy\Matcher;
+
+interface Matcher
+{
+    /**
+     * @param object $object
+     * @param string $property
+     *
+     * @return boolean
+     */
+    public function matches($object, $property);
+}