Mark internal API as private

Author: clue

src/ExtLibeventLoop.php

@@ -35,6 +35,7 @@
  */
 class ExtLibeventLoop implements LoopInterface
 {
+    /** @internal */
     const MICROSECONDS_PER_SECOND = 1000000;
 
     private $eventBase;

src/StreamSelectLoop.php

@@ -52,6 +52,7 @@
  */
 class StreamSelectLoop implements LoopInterface
 {
+    /** @internal */
     const MICROSECONDS_PER_SECOND = 1000000;
 
     private $futureTickQueue;
@@ -268,7 +269,7 @@ private function waitForStreamActivity($timeout)
      * @return integer|false The total number of streams that are ready for read/write.
      * Can return false if stream_select() is interrupted by a signal.
      */
-    protected function streamSelect(array &$read, array &$write, $timeout)
+    private function streamSelect(array &$read, array &$write, $timeout)
     {
         if ($read || $write) {
             $except = null;