def perform_stack_action(self, stack: AutomatonStack,
configuration: Configuration):
current_content = stack.get_current_content()
stack.add_data(VariableExpression(current_content))
stack.remove_level()
stack.add_level()
def perform_stack_action(self, stack: AutomatonStack, configuration: Configuration):
stack.add_data(VariableExpression(stack.get_current_content()))
stack.remove_level()
AcceptState.check_stack(stack)