Bug 420139 - Swing desktop execClosing not excuted correctly on closing

https://bugs.eclipse.org/bugs/show_bug.cgi?id=420139

Configuration for new method.
diff --git a/org.eclipse.scout.sdk.ui/resources/sdkPropertyViewConfig.xml b/org.eclipse.scout.sdk.ui/resources/sdkPropertyViewConfig.xml
index 46f839c..a074657 100644
--- a/org.eclipse.scout.sdk.ui/resources/sdkPropertyViewConfig.xml
+++ b/org.eclipse.scout.sdk.ui/resources/sdkPropertyViewConfig.xml
@@ -196,6 +196,7 @@
 		<config name="execOpened" type="Normal" category="BusinessLogic" />
 		<config name="execClosing" type="Normal" category="BusinessLogic" />
 		<config name="execGuiAttached" type="Normal" category="BusinessLogic" />
+		<config name="execBeforeClosing" type="Normal" category="BusinessLogic" />
 		<config name="execGuiDetached" type="Normal" category="BusinessLogic" />
 		<config name="execOutlineChanged" type="Advanced" category="BusinessLogic" />
 		<config name="execPageSearchFormChanged" type="Advanced" category="BusinessLogic" />
@@ -825,4 +826,4 @@
 		<config name="execClicked" type="Normal" category="BusinessLogic" />
 		<config name="execHyperlink" type="Advanced" category="BusinessLogic" />
 	</type>
-</configs>
\ No newline at end of file
+</configs>