code: @Restricted(NoExternalUse.class)
      @RestrictedSince("2.37")
      @Deprecated
      public FormValidation doCheckURIEncoding(StaplerRequest request) throws IOException {
          return ExtensionList.lookupSingleton(URICheckEncodingMonitor.class).doCheckURIEncoding(request);
      }
docs: Checks if container uses UTF-8 to decode URLs. See
  http://wiki.jenkins-ci.org/display/JENKINS/Tomcat#Tomcat-i18n