e>Default</code></a>).</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>constraint violations or an empty set if none</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if <code>beanType</code> is <code>null</code>,
         if <code>propertyName</code> is <code>null</code>, empty or not a valid obj