title: Confirmation message Spring shell
body: <p>Is there an way for a spring-shell command to first ask for a confirmation message. For example</p>
  <blockquote>
  <blockquote>
  <p>command</p>
  </blockquote>
  <p>Do you want to proceed [y/n]</p>
  <blockquote>
  <p>y</p>
  </blockquote>
  <p>executing command</p>
  </blockquote>
  <p>I did some research on internet but I don't find example of this type of command.</p>