code: HttpRedirectionValidator getRedirectionValidator() {
          if (redirectionValidator == null) {
              redirectionValidator = redirection -> {
                  if (!nodeInScope(redirection.getEscapedURI())) {
                      if (log.isDebugEnabled()) {
                          log.debug("Skipping redirection out of scan's scope: " + redirection);
                      }
                      return false;
                  }
                  return true;
              };
          }
          return redirectionValidator;
      }
docs: Gets the redirection validator that ensures the followed redirections are in scan's scope.
  
  @return the redirection validator, never {@code null}.
  @since TODO add version
  @see #getRedirectRequestConfig()