e>T</code>.
 <p>
 A value extractor for a generic type such as <code>Optional</code>, <code>List</code> or <code>Map</code>
 is tied to one specific type parameter of <code>T</code>. The <a href="ExtractedValue.html" title="annotation in jakarta.validation.valueextraction"><code>ExtractedValue</code></a> annotation
 is used to mark that type parameter. A value extractor for a non-generic type such as
 <code>OptionalInt</code> needs to declare the type of the wrapped element(s) using
 <a href="ExtractedValue