docs: 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