pyqt qlabel hyperlink linking inner function

Question

from PyQt5 import uic, QtWidgets
from PyQt5.QtWidgets import *
from functools import partial
from PyQt5.QtCore import *
import sys
import json

class Exampleforstack(QMainWindow):
    def __init__(self):
        super(Exampleforstack, self).__init__()
        uic.loadUi('mainui.ui', self)
        #label_6 is Qlabel
        self.label_6.setText('we have an <a href = "self.GetNews">important message</a> for you!')
        self.label_6.setTextFormat(Qt.RichText)    
        self.label_6.setTextInteractionFlags(Qt.TextBrowserInteraction)   
        self.label_6.setOpenExternalLinks(True)
    
    

def GetNews(self, event):
    self.stackedWidget.setCurrentIndex(0)


if __name__ == '__main__':
   app = QApplication(sys.argv)
   widget = QtWidgets.QStackedWidget()
   mainWindow = Exampleforstack()
   widget.addWidget(mainWindow)
   main = Exampleforstack()
   widget.show()
   widget.showFullScreen()
   app.exec_()

Is there any way make hyperlink linking inner function? I wanna make program when i click this hyperlink i get result of method self.GetNews. i think HTML is the most useful way since i want to make qlabel like this

i think this cause because of my lack html knowledge. searched lot but currently not get what i want

Is there any possible way i can do this? or similar way (i can make whole qlabel clickable but that is not i want)