App: support of method unsetupObject in Python feature classes

src/App/FeaturePython.cpp

@@ -232,6 +232,28 @@ void FeaturePythonImp::onDocumentRestored()
     }
 }
 
+void FeaturePythonImp::unsetupObject()
+{
+    _FC_PY_CALL_CHECK(unsetupObject, return);
+
+    // Run the execute method of the proxy object.
+    Base::PyGILStateLocker lock;
+    try {
+        if (has__object__) {
+            Base::pyCall(py_unsetupObject.ptr());
+        }
+        else {
+            Py::Tuple args(1);
+            args.setItem(0, Py::Object(object->getPyObject(), true));
+            Base::pyCall(py_unsetupObject.ptr(), args.ptr());
+        }
+    }
+    catch (Py::Exception&) {
+        Base::PyException e; // extract the Python error text
+        e.ReportException();
+    }
+}
+
 bool FeaturePythonImp::getSubObject(DocumentObject *&ret, const char *subname,
     PyObject **pyObj, Base::Matrix4D *_mat, bool transform, int depth) const
 {

src/App/FeaturePython.h

@@ -53,6 +53,7 @@ public:
     bool onBeforeChangeLabel(std::string &newLabel);
     void onChanged(const Property* prop);
     void onDocumentRestored();
+    void unsetupObject();
     std::string getViewProviderName();
     PyObject *getPyObject();
 
@@ -94,6 +95,7 @@ private:
     FC_PY_ELEMENT(onBeforeChangeLabel)\
     FC_PY_ELEMENT(onChanged)\
     FC_PY_ELEMENT(onDocumentRestored)\
+    FC_PY_ELEMENT(unsetupObject)\
     FC_PY_ELEMENT(getViewProviderName)\
     FC_PY_ELEMENT(getSubObject)\
     FC_PY_ELEMENT(getSubObjects)\
@@ -341,6 +343,10 @@ protected:
         imp->onDocumentRestored();
         FeatureT::onDocumentRestored();
     }
+    void unsetupObject() override {
+        imp->unsetupObject();
+        FeatureT::unsetupObject();
+    }
 
 public:
     FeaturePythonT(const FeaturePythonT&) = delete;