fix body boolean placements

src/Mod/PartDesign/App/Body.cpp

@@ -325,6 +325,17 @@ void Body::removeFeature(App::DocumentObject* feature)
     Model.setValues(model);
 }
 
+bool Body::isFeature(App::DocumentObject* feature)
+{
+    for(App::DocumentObject* obj : Model.getValues()) {
+        
+        if(obj == feature)
+            return true;
+    }
+    return false;
+}
+
+
 App::DocumentObjectExecReturn *Body::execute(void)
 {
     /*