title: How do I use share() on a relay?
body: <p>I have a <code>behaviourRelay</code> that I would like to share between two subscriptions:</p>
  <pre><code>var firmwareVersionRelay = BehaviorRelay&lt;FirmwareVersionModel?&gt;(value: nil).share()
  </code></pre>
  <p>This, however, turns the relay into an <code>observable</code>, which means that I can no longer use the <code>accept</code> operator.</p>
  <p>So how do I get around this? Is it possible to have a relay with share? Should I simply skipp share? Or should I just use <code>onNext</code> instead of <code>accept</code>?</p>