title: Spring Bean validation giving ConstraintDeclarationException
body: <p>I am getting javax.validation.ConstraintDeclarationException: HV000197: No value extractor found for type parameter 'T' of type reactor.core.publisher.Mono.
  I am getting this after adding @Validated at class level. If I remove this no validation logic triggers.</p>
  
  <pre><code>  @RestController
    @Validated
    public class ContactInfoController implements ContactInfoApi {
    public Flux&lt;UserContactsModel&gt; getUserContacts(@RequestBody  Mono&lt;@Valid  LoginModel&gt; loginDetail) {
  </code></pre>