Refresh the model

        :returns: None
        :rtype: None
        :raises: None

def refresh(self, *args, **kwargs):
        """Refresh the model

        :returns: None
        :rtype: None
        :raises: None
        """
        self.prjbrws.set_model(self.create_prj_model())
        if self.get_current_file():
            self.set_to_current()
        else:
            self.init_selection()