'Clicks the radio button for "No Content Group" association.
Returns whether or not the radio button is in the selected state after the click.'

def select_content_group_radio_button(self):

    radio_button = self.q(css=self._bounded_selector(self.select_content_group_button_css)).results[0]
    radio_button.click()
    return radio_button.is_selected()
