godot/mapping.py
def _domain_model_changed_for_diagram(self, obj, name, old, new):
        """ Handles the domain model changing """

        if old is not None:
            self.unmap_model(old)
        if new is not None:
            self.map_model(new)
def _domain_model_changed_for_diagram(self, obj, name, old, new):
        """ Handles the domain model changing """

        if old is not None:
            self.unmap_model(old)
        if new is not None:
            self.map_model(new)
Handles the domain model changing