Mark internal tick API as final to discourage external usage

clue · clue · commit 4827e00b5ac6 · 2017-04-26T16:34:22.000+02:00
diff --git a/src/Tick/FutureTickQueue.php b/src/Tick/FutureTickQueue.php
@@ -4,7 +4,15 @@
 
 use SplQueue;
 
-class FutureTickQueue
+/**
+ * A tick queue implementation that can hold multiple callback functions
+ *
+ * This class should only be used internally, see LoopInterface instead.
+ *
+ * @see LoopInterface
+ * @internal
+ */
+final class FutureTickQueue
 {
     private $queue;
 
