new file mode 100644
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+namespace GuzzleHttp\Promise;
+/**
+ * Exception that is set as the reason for a promise that has been cancelled.
+ */
+class CancellationException extends RejectionException
+{
+}
deleted file mode 100644
@@ -1,10 +0,0 @@
-<?php
-
-namespace GuzzleHttp\Promise;
-/**
- * Exception that is set as the reason for a promise that has been cancelled.
- */
-class CancellationException extends RejectionException
-{
-}
@@ -0,0 +1,10 @@