kwin_lowlatency-Plasma-5_18-pid.patch

diff --color -rupN ./a/toplevel.h ./b/toplevel.h
--- a/toplevel.h	2021-10-22 21:33:16.000000000 +0200
+++ b/toplevel.h	2022-05-17 12:16:52.000000000 +0200
@@ -298,6 +298,13 @@ class KWIN_EXPORT Toplevel : public QObj
      */
     Q_PROPERTY(QUuid internalId READ internalId CONSTANT)
 
+    /**
+     * The pid of the process owning this window.
+     *
+     * @since 5.20
+     */
+    Q_PROPERTY(int pid READ pid CONSTANT)
+
 public:
     explicit Toplevel();
     virtual xcb_window_t frameId() const;