midHandleArchetype property
      
      GraphObject?
      get
      midHandleArchetype
      
    
    
Gets or sets a small GraphObject that is copied as a resegment handle at each mid-point in the selected Link's route. By default this is a Shape that is a small blue diamond. Setting this property does not raise any events.
Here is an example of changing the default handle to be larger cyan triangles:
  myDiagram.toolManager.linkReshapingTool.midHandleArchetype =
    $(go.Shape, "Triangle", { width: 10, height: 10, fill: "cyan" });
Implementation
_i3.GraphObject? get midHandleArchetype => _i4.getProperty(
      this,
      'midHandleArchetype',
    );
      
      set
      midHandleArchetype
      (GraphObject? value) 
      
    
    
    
Implementation
set midHandleArchetype(_i3.GraphObject? value) {
  _i4.setProperty(
    this,
    'midHandleArchetype',
    value ?? _i5.undefined,
  );
}