# from PySide2.QtWidgets import  QPushButton,QMainWindow

# class ButtonHolder(QMainWindow):
#     def __init__(self):
#         super().__init__()
#         self.setWindowTitle('Xing Api Client By dev')
#         btn=QPushButton()
#         btn.setText('hit me')
#         btn.clicked.connect(self.on_click)
#         btn.setCheckable(True)
#         self.setCentralWidget(btn)

#     def on_click(self,data):
#         #print('btn is clicked: ',data)
#         pass