--- /dev/null
+<?php
+
+/*
+ * This file is a part of dflydev/placeholder-resolver.
+ *
+ * (c) Dragonfly Development Inc.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Dflydev\PlaceholderResolver;
+
+interface PlaceholderResolverInterface
+{
+ /**
+ * Resolve a placeholder
+ *
+ * @param string $placeholder
+ *
+ * @return string|null
+ */
+ public function resolvePlaceholder($placeholder);
+}