+ fixes #0001514: Padding a sketch inside a group fails with error message

src/App/DocumentObject.cpp

@@ -31,6 +31,7 @@
 #include "Document.h"
 #include "DocumentObject.h"
 #include "DocumentObjectPy.h"
+#include "DocumentObjectGroup.h"
 #include "PropertyLinks.h"
 #define new DEBUG_CLIENTBLOCK
 using namespace App;
@@ -158,6 +159,11 @@ std::vector<App::DocumentObject*> DocumentObject::getInList(void) const
         return std::vector<App::DocumentObject*>();
 }
 
+DocumentObjectGroup* DocumentObject::getGroup() const
+{
+    return DocumentObjectGroup::getGroupOfObject(this);
+}
+
 void DocumentObject::onLostLinkToObject(DocumentObject*)
 {