title: How to make rounded corner bars in google charts
body: <blockquote>
    <p>I have following chart with square bars</p>
  </blockquote>
  
  <p><a href="https://i.stack.imgur.com/SsHoS.png" rel="noreferrer"><img src="https://i.stack.imgur.com/SsHoS.png" alt="enter image description here"></a></p>
  
  <blockquote>
    <p>I want it to make rounded corner bars with google charts like below pic</p>
  </blockquote>
  
  <p><a href="https://i.stack.imgur.com/LtFQz.png" rel="noreferrer"><img src="https://i.stack.imgur.com/LtFQz.png" alt="enter image description here"></a></p>