Sets the text for this button.  If it is set to show rich text, then
        it will update the label text, leaving the root button text blank, 
        otherwise it will update the button.
        
        :param      text | <str>

def setText(self, text):
        """
        Sets the text for this button.  If it is set to show rich text, then
        it will update the label text, leaving the root button text blank, 
        otherwise it will update the button.
        
        :param      text | <str>
        """
        self._text = nativestring(text)
        if self.showRichText():
            self.richTextLabel().setText(text)
        else:
            super(XPushButton, self).setText(text)