如何专门连接到过载信号?

我正在使用带有2个过载的信号

buttonClicked = pyqtSignal([int],[str])

class Example(QWidget):

    buttonClicked = pyqtSignal([int],[str])

    def __init__(self):
        super().__init__()
        self.init_ui()

    def init_ui(self):
        self.btn = QPushButton('Button',self)
        self.btn.clicked.connect(self.doAction)
        self.make_conn()
        self.setWindowTitle('Yo')
        self.show()

    def make_conn(self):
        self.buttonClicked.connect(self.showDialog) #How to make specific connection here . Using self.buttonClicked[int].connect(self.showDialog) doesnt work.

    def showDialog(self):
        print('here')

    def doAction(self):
        self.buttonClicked.emit('soru') #should NOT call showDialog
        self.buttonClicked.emit(23) #should call showDialog