canStart method
Return true if it's a single mouse right click that hasn't moved Tool#isBeyondDragSize and that is on a GraphObject with a GraphObject#contextMenu. This is also true if the mouse right click is in the diagram background and the diagram's Diagram#contextMenu is non-null.
On touch devices, a special default context menu will appear even if no object with a context menu is found.
This method may be overridden. Please read the Introduction page on Extensions for how to override methods and how to call this base method. @expose @return {boolean}
Implementation
_i2.bool canStart() => _i4.callMethod(
this,
'canStart',
[],
);