--- /dev/null	2018-11-09 14:37:11.000000000 -0500
+++ new/src/jdk.jpackager/macosx/classes/jdk/jpackager/internal/resources/mac/preinstall.template	2018-11-09 14:37:09.755073600 -0500
@@ -0,0 +1,8 @@
+#!/usr/bin/env sh
+
+set -e
+if launchctl list "DEPLOY_DAEMON_IDENTIFIER" &> /dev/null; then
+    launchctl unload "/Library/LaunchDaemons/DEPLOY_LAUNCHD_PLIST_FILE"
+fi
+
+exit 0