def insert(self, index, option):
self._options.insert(index, self._parse_option(option))<EOL>self._refresh_options()<EOL>self.resize(self._width, self._height)<EOL>
Insert a new `option` in the ButtonGroup at `index`.

:param int option:
    The index of where to insert the option.

:param string/List option:
    The option to append to the ButtonGroup. If a 2D list is specified,
    the first element is the text, the second is the value.