How to use the puregram.InlineKeyboard.keyboard function in puregram

telegram.updates.hear('/inline', (context) => {
  return context.send('There\'s your keyboard!', {
    reply_markup: InlineKeyboard.keyboard([
      [
        InlineKeyboard.textButton({
          text: 'Inline button!',
        }),
      ],

      [
        InlineKeyboard.textButton({
          text: 'And there\'s more!',
        }),

        InlineKeyboard.textButton({
          text: 'Payload button',
          payload: { payload: true },
        }),
      ],