code: func InstallHandlers(r *router.Router, base router.MiddlewareChain, rules *RuleSet) {
  	r.GET(metadataPath, base, metadataRequestHandler(rules))
  	r.POST(validationPath, base, validationRequestHandler(rules))
  }
docs: // InstallHandlers installs the metadata and validation handlers that use
  // the given validation rules.
  //
  // It does not implement any authentication checks, thus the passed in
  // router.MiddlewareChain should implement any necessary authentication checks.