stAsync(shared, prepResult, execResult)</code> method returns an <strong>Action</strong> string. By default, if <code>postAsync()</code> doesn't explicitly return anything, we treat that as <code>"default"</code>.</p>
<p>You define transitions with the syntax:</p>
<ol>
<li>
<p><strong>Basic default transition:</strong> <code>nodeA &gt;&gt; nodeB</code><br />
   This means if <code>nodeA.postAsync()</code> returns <code>"default"</code> (or <code>undefined</code>), proceed to <code>nodeB</code>.<br />
<em>(E