title: Is it possible to have an default uuid value which could show that the uuid is not valid
body: <p>I am creating a <code>case class</code>. I want to define default values to its fields. One of the fields in <code>uuid</code>. What could be a default value I could give it to signify that the user didn't give an <code>uuid</code>?</p>
  
  <p>So far I have used <code>Option[UUID]</code> which works but it made me wonder if there could be some default value of <code>UUID</code> as well?</p>