def icon(self, icontype_or_qfileinfo):
        """Reimplement Qt method"""
        if isinstance(icontype_or_qfileinfo, QFileIconProvider.IconType):
            return super(IconProvider, self).icon(icontype_or_qfileinfo)
        else:
            qfileinfo = icontype_or_qfileinfo
            fname = osp.normpath(to_text_string(qfileinfo.absoluteFilePath()))
            return ima.get_icon_by_extension(fname, scale_factor=1.0)
Reimplement Qt method