code: protected void verifyAuthenticationContextSignature(final Pair<? extends SignableSAMLObject, MessageContext> authenticationContext,
                                                          final HttpServletRequest request, final RequestAbstractType authnRequest,
                                                          final SamlRegisteredServiceServiceProviderMetadataFacade adaptor) throws Exception {
          val ctx = authenticationContext.getValue();
          verifyAuthenticationContextSignature(ctx, request, authnRequest, adaptor);
      }
docs: Verify authentication context signature.
  
  @param authenticationContext the authentication context
  @param request               the request
  @param authnRequest          the authn request
  @param adaptor               the adaptor
  @throws Exception the exception