diff --git a/classes/icatchall.php b/classes/icatchall.php
new file mode 100644
index 000000000..29954d35a
--- /dev/null
+++ b/classes/icatchall.php
@@ -0,0 +1,4 @@
+<?php
+interface ICatchall {
+	function catchall(string $method): void;
+}