diff --git a/src/Mod/TechDraw/App/CosmeticExtension.h b/src/Mod/TechDraw/App/CosmeticExtension.h
index d269e8a884..a010ddefa9 100644
--- a/src/Mod/TechDraw/App/CosmeticExtension.h
+++ b/src/Mod/TechDraw/App/CosmeticExtension.h
@@ -95,7 +95,7 @@ private:
 
 };
 
-typedef App::ExtensionPythonT<CosmeticExtension> CosmeticExtensionPython;
+using CosmeticExtensionPython = App::ExtensionPythonT<CosmeticExtension>;
 
 } //end namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawGeomHatch.h b/src/Mod/TechDraw/App/DrawGeomHatch.h
index d29a01173d..b05fa0c8bb 100644
--- a/src/Mod/TechDraw/App/DrawGeomHatch.h
+++ b/src/Mod/TechDraw/App/DrawGeomHatch.h
@@ -113,7 +113,7 @@ private:
 
 };
 
-typedef App::FeaturePythonT<DrawGeomHatch> DrawGeomHatchPython;
+using DrawGeomHatchPython = App::FeaturePythonT<DrawGeomHatch>;
 
 
 
diff --git a/src/Mod/TechDraw/App/DrawHatch.h b/src/Mod/TechDraw/App/DrawHatch.h
index 1afbbd3afd..ad4fd3fd4e 100644
--- a/src/Mod/TechDraw/App/DrawHatch.h
+++ b/src/Mod/TechDraw/App/DrawHatch.h
@@ -84,7 +84,7 @@ private:
 
 };
 
-typedef App::FeaturePythonT<DrawHatch> DrawHatchPython;
+using DrawHatchPython = App::FeaturePythonT<DrawHatch>;
 
 } //namespace TechDraw
 #endif
diff --git a/src/Mod/TechDraw/App/DrawLeaderLine.h b/src/Mod/TechDraw/App/DrawLeaderLine.h
index 6d8eb0a398..269e60638d 100644
--- a/src/Mod/TechDraw/App/DrawLeaderLine.h
+++ b/src/Mod/TechDraw/App/DrawLeaderLine.h
@@ -87,7 +87,7 @@ private:
 
 };
 
-typedef App::FeaturePythonT<DrawLeaderLine> DrawLeaderLinePython;
+using DrawLeaderLinePython = App::FeaturePythonT<DrawLeaderLine>;
 
 } //namespace TechDraw
 #endif
diff --git a/src/Mod/TechDraw/App/DrawPage.h b/src/Mod/TechDraw/App/DrawPage.h
index dc5d0b8860..bfff9156c8 100644
--- a/src/Mod/TechDraw/App/DrawPage.h
+++ b/src/Mod/TechDraw/App/DrawPage.h
@@ -22,9 +22,9 @@
 
 #ifndef _DrawPage_h_
 #define _DrawPage_h_
-
-#include <Mod/TechDraw/TechDrawGlobal.h>
-
+
+#include <Mod/TechDraw/TechDrawGlobal.h>
+
 #include <boost_signals2.hpp>
 
 #include <App/DocumentObject.h>
@@ -122,7 +122,7 @@ private:
 
 };
 
-typedef App::FeaturePythonT<DrawPage> DrawPagePython;
+using DrawPagePython = App::FeaturePythonT<DrawPage>;
 
 } //namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawParametricTemplate.h b/src/Mod/TechDraw/App/DrawParametricTemplate.h
index 033edf9d12..5000b78ea5 100644
--- a/src/Mod/TechDraw/App/DrawParametricTemplate.h
+++ b/src/Mod/TechDraw/App/DrawParametricTemplate.h
@@ -22,8 +22,8 @@
 
 #ifndef _TECHDRAW_DrawParametricTemplate_h_
 #define _TECHDRAW_DrawParametricTemplate_h_
-
-#include <Mod/TechDraw/TechDrawGlobal.h>
+
+#include <Mod/TechDraw/TechDrawGlobal.h>
 
 #include <App/FeaturePython.h>
 #include <App/PropertyFile.h>
@@ -90,7 +90,7 @@ private:
     static const char* OrientationEnums[];
 };
 
-typedef App::FeaturePythonT<DrawParametricTemplate> DrawParametricTemplatePython;
+using DrawParametricTemplatePython = App::FeaturePythonT<DrawParametricTemplate>;
 
 } //namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawProjectSplit.h b/src/Mod/TechDraw/App/DrawProjectSplit.h
index 668f0e6d17..58e0f12965 100644
--- a/src/Mod/TechDraw/App/DrawProjectSplit.h
+++ b/src/Mod/TechDraw/App/DrawProjectSplit.h
@@ -97,7 +97,7 @@ private:
 
 };
 
-typedef App::FeaturePythonT<DrawProjectSplit> DrawProjectSplitPython;
+using DrawProjectSplitPython = App::FeaturePythonT<DrawProjectSplit>;
 
 } //namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawRichAnno.h b/src/Mod/TechDraw/App/DrawRichAnno.h
index aeb11ba5a4..aa92aac9a7 100644
--- a/src/Mod/TechDraw/App/DrawRichAnno.h
+++ b/src/Mod/TechDraw/App/DrawRichAnno.h
@@ -64,7 +64,7 @@ protected:
 private:
 };
 
-typedef App::FeaturePythonT<DrawRichAnno> DrawRichAnnoPython;
+using DrawRichAnnoPython = App::FeaturePythonT<DrawRichAnno>;
 
 } //namespace TechDraw
 #endif
diff --git a/src/Mod/TechDraw/App/DrawSVGTemplate.h b/src/Mod/TechDraw/App/DrawSVGTemplate.h
index bafa365dc5..659e3098e5 100644
--- a/src/Mod/TechDraw/App/DrawSVGTemplate.h
+++ b/src/Mod/TechDraw/App/DrawSVGTemplate.h
@@ -22,8 +22,8 @@
 
 #ifndef _TECHDRAW_DrawSVGTemplate_h_
 #define _TECHDRAW_DrawSVGTemplate_h_
-
-#include <Mod/TechDraw/TechDrawGlobal.h>
+
+#include <Mod/TechDraw/TechDrawGlobal.h>
 
 #include <App/FeaturePython.h>
 #include <App/PropertyFile.h>
@@ -77,7 +77,7 @@ protected:
 
 };
 
-typedef App::FeaturePythonT<DrawSVGTemplate> DrawSVGTemplatePython;
+using DrawSVGTemplatePython = App::FeaturePythonT<DrawSVGTemplate>;
 
 } //namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawTemplate.h b/src/Mod/TechDraw/App/DrawTemplate.h
index 53f5679e7f..d006d0e4d8 100644
--- a/src/Mod/TechDraw/App/DrawTemplate.h
+++ b/src/Mod/TechDraw/App/DrawTemplate.h
@@ -22,8 +22,8 @@
 
 #ifndef _TECHDRAW_DrawTemplate_h_
 #define _TECHDRAW_DrawTemplate_h_
-
-#include <Mod/TechDraw/TechDrawGlobal.h>
+
+#include <Mod/TechDraw/TechDrawGlobal.h>
 
 #include <App/DocumentObject.h>
 #include <App/FeaturePython.h>
@@ -86,7 +86,7 @@ private:
 
 };
 
-typedef App::FeaturePythonT<DrawTemplate> DrawTemplatePython;
+using DrawTemplatePython = App::FeaturePythonT<DrawTemplate>;
 
 } //namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawTile.h b/src/Mod/TechDraw/App/DrawTile.h
index 8112e1c56e..f604670f08 100644
--- a/src/Mod/TechDraw/App/DrawTile.h
+++ b/src/Mod/TechDraw/App/DrawTile.h
@@ -22,8 +22,8 @@
 
 #ifndef _TechDraw_DrawTile_h_
 #define _TechDraw_DrawTile_h_
-
-#include <Mod/TechDraw/TechDrawGlobal.h>
+
+#include <Mod/TechDraw/TechDrawGlobal.h>
 
 # include <App/DocumentObject.h>
 # include <App/FeaturePython.h>
@@ -62,7 +62,7 @@ protected:
 private:
 };
 
-typedef App::FeaturePythonT<DrawTile> DrawTilePython;
+using DrawTilePython = App::FeaturePythonT<DrawTile>;
 
 } //namespace TechDraw
 #endif
diff --git a/src/Mod/TechDraw/App/DrawTileWeld.h b/src/Mod/TechDraw/App/DrawTileWeld.h
index 206f7c37fb..afc37e1e30 100644
--- a/src/Mod/TechDraw/App/DrawTileWeld.h
+++ b/src/Mod/TechDraw/App/DrawTileWeld.h
@@ -22,8 +22,8 @@
 
 #ifndef _TechDraw_DrawTileWeld_h_
 #define _TechDraw_DrawTileWeld_h_
-
-#include <Mod/TechDraw/TechDrawGlobal.h>
+
+#include <Mod/TechDraw/TechDrawGlobal.h>
 
 #include <App/DocumentObject.h>
 #include <App/FeaturePython.h>
@@ -73,7 +73,7 @@ protected:
 private:
 };
 
-typedef App::FeaturePythonT<DrawTileWeld> DrawTileWeldPython;
+using DrawTileWeldPython = App::FeaturePythonT<DrawTileWeld>;
 
 } //namespace TechDraw
 #endif
diff --git a/src/Mod/TechDraw/App/DrawView.h b/src/Mod/TechDraw/App/DrawView.h
index 287d6b92d2..24976d9b59 100644
--- a/src/Mod/TechDraw/App/DrawView.h
+++ b/src/Mod/TechDraw/App/DrawView.h
@@ -132,7 +132,7 @@ private:
     bool m_overrideKeepUpdated;
 };
 
-typedef App::FeaturePythonT<DrawView> DrawViewPython;
+using DrawViewPython = App::FeaturePythonT<DrawView>;
 
 } //namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawViewAnnotation.h b/src/Mod/TechDraw/App/DrawViewAnnotation.h
index 3841e0d9ea..488023b13b 100644
--- a/src/Mod/TechDraw/App/DrawViewAnnotation.h
+++ b/src/Mod/TechDraw/App/DrawViewAnnotation.h
@@ -75,7 +75,7 @@ private:
     static const char* TextStyleEnums[];
 };
 
-typedef App::FeaturePythonT<DrawViewAnnotation> DrawViewAnnotationPython;
+using DrawViewAnnotationPython = App::FeaturePythonT<DrawViewAnnotation>;
 
 
 } //namespace TechDraw
diff --git a/src/Mod/TechDraw/App/DrawViewClip.h b/src/Mod/TechDraw/App/DrawViewClip.h
index dd2d66fa23..0699cf8f2d 100644
--- a/src/Mod/TechDraw/App/DrawViewClip.h
+++ b/src/Mod/TechDraw/App/DrawViewClip.h
@@ -77,7 +77,7 @@ protected:
     void onChanged(const App::Property* prop) override;
 };
 
-typedef App::FeaturePythonT<DrawViewClip> DrawViewClipPython;
+using DrawViewClipPython = App::FeaturePythonT<DrawViewClip>;
 
 } //namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawViewDetail.h b/src/Mod/TechDraw/App/DrawViewDetail.h
index f6e70ba509..b1fad36f5e 100644
--- a/src/Mod/TechDraw/App/DrawViewDetail.h
+++ b/src/Mod/TechDraw/App/DrawViewDetail.h
@@ -110,7 +110,7 @@ protected:
     DrawViewSection* m_saveDvs;
 };
 
-typedef App::FeaturePythonT<DrawViewDetail> DrawViewDetailPython;
+using DrawViewDetailPython = App::FeaturePythonT<DrawViewDetail>;
 
 } //namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawViewDimension.h b/src/Mod/TechDraw/App/DrawViewDimension.h
index 5a4a2c7543..9b3b64c6de 100644
--- a/src/Mod/TechDraw/App/DrawViewDimension.h
+++ b/src/Mod/TechDraw/App/DrawViewDimension.h
@@ -48,7 +48,7 @@ struct DimRef {
     std::string   sub;
 };
 
-typedef std::pair<Base::Vector3d,Base::Vector3d> pointPair;
+using pointPair = std::pair<Base::Vector3d,Base::Vector3d>;
 
 struct anglePoints
 {
diff --git a/src/Mod/TechDraw/App/DrawViewDraft.h b/src/Mod/TechDraw/App/DrawViewDraft.h
index 793ef3ff90..3993042853 100644
--- a/src/Mod/TechDraw/App/DrawViewDraft.h
+++ b/src/Mod/TechDraw/App/DrawViewDraft.h
@@ -74,7 +74,7 @@ protected:
     std::string getSVGTail();
 };
 
-typedef App::FeaturePythonT<DrawViewDraft> DrawViewDraftPython;
+using DrawViewDraftPython = App::FeaturePythonT<DrawViewDraft>;
 
 
 } //namespace TechDraw
diff --git a/src/Mod/TechDraw/App/DrawViewImage.h b/src/Mod/TechDraw/App/DrawViewImage.h
index 2d2379dede..69a5a1f61f 100644
--- a/src/Mod/TechDraw/App/DrawViewImage.h
+++ b/src/Mod/TechDraw/App/DrawViewImage.h
@@ -72,7 +72,7 @@ protected:
     Base::BoundBox3d bbox;
 };
 
-typedef App::FeaturePythonT<DrawViewImage> DrawViewImagePython;
+using DrawViewImagePython = App::FeaturePythonT<DrawViewImage>;
 
 
 } //namespace TechDraw
diff --git a/src/Mod/TechDraw/App/DrawViewMulti.h b/src/Mod/TechDraw/App/DrawViewMulti.h
index 5610652393..bd2004369c 100644
--- a/src/Mod/TechDraw/App/DrawViewMulti.h
+++ b/src/Mod/TechDraw/App/DrawViewMulti.h
@@ -80,7 +80,7 @@ protected:
 //    void getParameters(void);
 };
 
-typedef App::FeaturePythonT<DrawViewMulti> DrawViewMultiPython;
+using DrawViewMultiPython = App::FeaturePythonT<DrawViewMulti>;
 
 } //namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawViewPart.h b/src/Mod/TechDraw/App/DrawViewPart.h
index 1ee08715d0..76114b8127 100644
--- a/src/Mod/TechDraw/App/DrawViewPart.h
+++ b/src/Mod/TechDraw/App/DrawViewPart.h
@@ -269,7 +269,7 @@ private:
 
 };
 
-typedef App::FeaturePythonT<DrawViewPart> DrawViewPartPython;
+using DrawViewPartPython = App::FeaturePythonT<DrawViewPart>;
 
 } //namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawViewSection.h b/src/Mod/TechDraw/App/DrawViewSection.h
index 11b9a94d98..77359588a7 100644
--- a/src/Mod/TechDraw/App/DrawViewSection.h
+++ b/src/Mod/TechDraw/App/DrawViewSection.h
@@ -166,7 +166,7 @@ protected:
 
 };
 
-typedef App::FeaturePythonT<DrawViewSection> DrawViewSectionPython;
+using DrawViewSectionPython = App::FeaturePythonT<DrawViewSection>;
 
 } //namespace TechDraw
 
diff --git a/src/Mod/TechDraw/App/DrawViewSpreadsheet.h b/src/Mod/TechDraw/App/DrawViewSpreadsheet.h
index 68ddadc35e..d0e9fe8687 100644
--- a/src/Mod/TechDraw/App/DrawViewSpreadsheet.h
+++ b/src/Mod/TechDraw/App/DrawViewSpreadsheet.h
@@ -70,7 +70,7 @@ protected:
 private:
 };
 
-typedef App::FeaturePythonT<DrawViewSpreadsheet> DrawViewSpreadsheetPython;
+using DrawViewSpreadsheetPython = App::FeaturePythonT<DrawViewSpreadsheet>;
 
 
 } //namespace TechDraw
diff --git a/src/Mod/TechDraw/App/DrawViewSymbol.h b/src/Mod/TechDraw/App/DrawViewSymbol.h
index 26887f37a5..a8cced9aba 100644
--- a/src/Mod/TechDraw/App/DrawViewSymbol.h
+++ b/src/Mod/TechDraw/App/DrawViewSymbol.h
@@ -77,7 +77,7 @@ protected:
     bool loadQDomDocument(QDomDocument& symbolDocument);
 };
 
-typedef App::FeaturePythonT<DrawViewSymbol> DrawViewSymbolPython;
+using DrawViewSymbolPython = App::FeaturePythonT<DrawViewSymbol>;
 
 
 } //namespace TechDraw
diff --git a/src/Mod/TechDraw/App/DrawWeldSymbol.h b/src/Mod/TechDraw/App/DrawWeldSymbol.h
index 7fb1dae33b..153aec9f03 100644
--- a/src/Mod/TechDraw/App/DrawWeldSymbol.h
+++ b/src/Mod/TechDraw/App/DrawWeldSymbol.h
@@ -69,7 +69,7 @@ protected:
 private:
 };
 
-typedef App::FeaturePythonT<DrawWeldSymbol> DrawWeldSymbolPython;
+using DrawWeldSymbolPython = App::FeaturePythonT<DrawWeldSymbol>;
 
 } //namespace TechDraw
 #endif
diff --git a/src/Mod/TechDraw/App/EdgeWalker.cpp b/src/Mod/TechDraw/App/EdgeWalker.cpp
index a5fbf33fbc..1541c18996 100644
--- a/src/Mod/TechDraw/App/EdgeWalker.cpp
+++ b/src/Mod/TechDraw/App/EdgeWalker.cpp
@@ -177,9 +177,9 @@ bool EdgeWalker::perform()
     }
 
     // Test for planarity
-    typedef std::vector< graph_traits<TechDraw::graph>::edge_descriptor > vec_t;
+    using vec_t = std::vector< graph_traits<TechDraw::graph>::edge_descriptor >;
     std::vector<vec_t> embedding(num_vertices(m_g));
-    typedef std::vector< graph_traits<TechDraw::graph>::edge_descriptor > kura_edges_t;
+    using kura_edges_t = std::vector< graph_traits<TechDraw::graph>::edge_descriptor >;
     kura_edges_t kEdges;
     kura_edges_t::iterator ki, ki_end;
     graph_traits<TechDraw::graph>::edge_descriptor e1;
diff --git a/src/Mod/TechDraw/App/EdgeWalker.h b/src/Mod/TechDraw/App/EdgeWalker.h
index b7ac595a4d..9108018218 100644
--- a/src/Mod/TechDraw/App/EdgeWalker.h
+++ b/src/Mod/TechDraw/App/EdgeWalker.h
@@ -45,32 +45,28 @@
 namespace TechDraw {
 //using namespace boost;
 
-typedef
+using graph =
     boost::adjacency_list
         < boost::vecS,
           boost::vecS,
           boost::undirectedS,
           boost::property<boost::vertex_index_t, int>,
           boost::property<boost::edge_index_t, int>
-        >
-        graph;
+        >;
 
-typedef
-    boost::graph_traits < graph >::vertex_descriptor
-        vertex_t;
-typedef
-    boost::graph_traits < graph >::edge_descriptor
-        edge_t;
+using vertex_t =
+    boost::graph_traits < graph >::vertex_descriptor;
 
-typedef
-    std::vector< std::vector<edge_t> >
-        planar_embedding_storage_t;
+using edge_t =
+    boost::graph_traits < graph >::edge_descriptor;
 
-typedef
+using planar_embedding_storage_t =
+    std::vector< std::vector<edge_t> >;
+
+using planar_embedding_t =
     boost::iterator_property_map< planar_embedding_storage_t::iterator,
                                   boost::property_map<graph, boost::vertex_index_t>::type
-                                >
-        planar_embedding_t;
+                                >;
 
 class TechDrawExport WalkerEdge
 {
diff --git a/src/Mod/TechDraw/App/ProjectionAlgos.h b/src/Mod/TechDraw/App/ProjectionAlgos.h
index effa99f2a4..7adea571b1 100644
--- a/src/Mod/TechDraw/App/ProjectionAlgos.h
+++ b/src/Mod/TechDraw/App/ProjectionAlgos.h
@@ -53,7 +53,7 @@ public:
         WithHidden = 1,
         WithSmooth = 2
     };
-    typedef std::map<std::string,std::string> XmlAttributes;
+    using XmlAttributes = std::map<std::string,std::string>;
 
     std::string getSVG(ExtractionType type, double tolerance=0.05,
                        XmlAttributes V_style=XmlAttributes(),
diff --git a/src/Mod/TechDraw/Gui/MDIViewPage.h b/src/Mod/TechDraw/Gui/MDIViewPage.h
index 0c74b3b4e8..ab60699b10 100644
--- a/src/Mod/TechDraw/Gui/MDIViewPage.h
+++ b/src/Mod/TechDraw/Gui/MDIViewPage.h
@@ -121,7 +121,7 @@ protected:
     
     void onDeleteObject(const App::DocumentObject& obj);
 
-    typedef boost::signals2::connection Connection;
+    using Connection = boost::signals2::connection;
     Connection connectDeletedObject;
 
     bool compareSelections(std::vector<Gui::SelectionObject> treeSel,QList<QGraphicsItem*> sceneSel);
diff --git a/src/Mod/TechDraw/Gui/ViewProviderCosmeticExtension.h b/src/Mod/TechDraw/Gui/ViewProviderCosmeticExtension.h
index e4956e0a5a..34f4fac097 100644
--- a/src/Mod/TechDraw/Gui/ViewProviderCosmeticExtension.h
+++ b/src/Mod/TechDraw/Gui/ViewProviderCosmeticExtension.h
@@ -42,7 +42,7 @@ public:
     virtual QIcon extensionMergeGreyableOverlayIcons(const QIcon & orig) const override;
 };
 
-typedef Gui::ViewProviderExtensionPythonT<TechDrawGui::ViewProviderCosmeticExtension> ViewProviderCosmeticExtensionPython;
+using ViewProviderCosmeticExtensionPython = Gui::ViewProviderExtensionPythonT<TechDrawGui::ViewProviderCosmeticExtension>;
 
 } //namespace TechDrawGui
 
diff --git a/src/Mod/TechDraw/Gui/ViewProviderDrawingView.h b/src/Mod/TechDraw/Gui/ViewProviderDrawingView.h
index 2acdb899d3..61301a0077 100644
--- a/src/Mod/TechDraw/Gui/ViewProviderDrawingView.h
+++ b/src/Mod/TechDraw/Gui/ViewProviderDrawingView.h
@@ -82,7 +82,7 @@ public:
     void onProgressMessage(const TechDraw::DrawView* dv,
                          const std::string featureName,
                          const std::string text);
-    typedef boost::signals2::scoped_connection Connection;
+    using Connection = boost::signals2::scoped_connection;
     Connection connectGuiRepaint;
     Connection connectProgressMessage;
 
diff --git a/src/Mod/TechDraw/Gui/ViewProviderPage.h b/src/Mod/TechDraw/Gui/ViewProviderPage.h
index 546171a3e4..ed8647b32c 100644
--- a/src/Mod/TechDraw/Gui/ViewProviderPage.h
+++ b/src/Mod/TechDraw/Gui/ViewProviderPage.h
@@ -82,7 +82,7 @@ public:
 
     //slots & connections
     void onGuiRepaint(const TechDraw::DrawPage* dp); 
-    typedef boost::signals2::scoped_connection Connection;
+    using Connection = boost::signals2::scoped_connection;
     Connection connectGuiRepaint;
 
     void unsetEdit(int ModNum) override;
diff --git a/src/Mod/Test/Gui/UnitTestPy.h b/src/Mod/Test/Gui/UnitTestPy.h
index b5acfe492e..649939f750 100644
--- a/src/Mod/Test/Gui/UnitTestPy.h
+++ b/src/Mod/Test/Gui/UnitTestPy.h
@@ -60,7 +60,7 @@ public:
     Py::Object clearUnitTests   (const Py::Tuple&);
 
 private:
-    typedef PyObject* (*method_varargs_handler)(PyObject *_self, PyObject *_args);
+    using method_varargs_handler = PyObject* (*)(PyObject *_self, PyObject *_args);
     static method_varargs_handler pycxx_handler;
     static PyObject *method_varargs_ext_handler(PyObject *_self, PyObject *_args);
 };