def render(self, ctx=None):
        '''
        :param ctx: rendering context in which the method was called
        :rtype: `Bits`
        :return: rendered value of the container, repeated
        '''
        self._initialize()
        times = self._min_times
        if self._mutating() and self._in_repeat_stage():
            times += (self._current_index) * self._step
        rendered = super(Repeat, self).render(ctx)
        self.set_current_value(rendered * times)
        return self._current_rendered
:param ctx: rendering context in which the method was called
        :rtype: `Bits`
        :return: rendered value of the container, repeated