title: How to add a project as a reference of another project
body: <p>I'm trying to add a project that contains some classes as a reference to another project, but I have not got, all your suggestions will be great </p>
  
  <p>Thank you</p>
  
  <p><a href="https://i.stack.imgur.com/3FYPt.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/3FYPt.jpg" alt="enter image description here"></a></p>