a name="get_property-2">get_property/2</a></h3>
<div class="spec">
<p><tt>get_property(Key::term(), Node::<a href="#type-tree_node">tree_node()</a>) -&gt; {ok, Value::term()} | error</tt><br></p>
</div><p>
  Extracts the value of a property from a tree_node. Returns error
  if it is not set.</p>

<h3 class="function"><a name="get_root_node-1">get_root_node/1</a></h3>
<div class="spec">
<p><tt>get_root_node(Tree::<a href="#type-tree">tree()</a>) -&gt; <a href="tree.html#type-tree_node">tree:tree_node()</a></