 extractor implementation</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>self following the chaining method pattern</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../javax/validation/valueextraction/ValueExtractorDeclarationException.html" title="class in javax.validation.valueextraction">ValueExtractorDeclarationException</a></code> - if more than one extractor for
         the same type and type parameter is added</dd>
<dt><span class="simpleTagLabel">Since:</spa