--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jpackager/macosx/classes/jdk/jpackager/internal/resources/mac/preinstall.template	Mon Nov 05 17:32:00 2018 -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