def get_selections(self):
        """Get current model selection status in state machine selection (filtered according the purpose of the widget)
        and tree selection of the widget"""
        sm_selection, sm_filtered_selected_model_set = self.get_state_machine_selection()
        tree_selection, selected_model_list = self.get_view_selection()
        return tree_selection, selected_model_list, sm_selection, sm_filtered_selected_model_set
Get current model selection status in state machine selection (filtered according the purpose of the widget)
        and tree selection of the widget