constraint</code></p></div></li></ul></div></div><div class="field "><a name="contains"></a><h3 class="anchor"><code><a href="#contains"><span class="identifier">contains</span></a>(<span style="white-space:nowrap">o:<a class="type" title="h2d.Object - A base 2D class that all scene tree elements inherit from." href="../h2d/Object.html">Object</a></span>):<a class="type" title="Bool - The standard Boolean type, which can either be true or false." href="../Bool.html">Bool</a></code></h3><div class="doc"><p>T