code: function (baseUrl, callback) {
      var self = this;
      var tests = [];
  
      // Export own request handler examples as test functions.
      for (var method in self.handlers) {
        var handler = self.handlers[method];
        if (!handler.examples) {
          throw (
            'Handler ' + method.toUpperCase() + ' ' + this.path +
              ' does not have examples!'
          );
        }
        handler.examples.forEach(function (example) {
          var test =
            self.testHandlerExample.bind(self, baseUrl, method, handler, example);
          tests.push(test);
        });
      }
  
      // Don't hang when there are no children.
      var pendingChildren = Object.keys(self.children).length;
      if (pendingChildren === 0) {
        callback(tests);
        return;
      }
  
      // Export children's request handler test functions recursively.
      var childBaseUrl = url.parse(String(baseUrl));
      childBaseUrl.pathname = normalizePath(self.path, childBaseUrl.pathname);
      childBaseUrl = url.format(childBaseUrl);
      for (var path in self.children) {
        self.children[path].exportAllTests(childBaseUrl, function (childTests) {
          tests = tests.concat(childTests);
          pendingChildren--;
          if (pendingChildren === 0) {
            callback(tests);
          }
        });
      }
    }
docs: Export all request handler examples as self-test functions.