elim">*)</span></td></tr><tr id="type-t.Aobserver" class="anchored"><td class="def variant constructor"><a href="#type-t.Aobserver" class="anchor"></a><code><span>| </span><span><span class="constructor">Aobserver</span></span></code></td><td class="def-doc"><span class="comment-delim">(*</span><p>denotes an object registered as an observers to a notification center</p><span class="comment-delim">*)</span></td></tr><tr id="type-t.Aunsubscribed_observer" class="anchored"><td class="def variant constructor"><