code: function createDTrace(name) {
      // see https://github.com/mcavage/node-restify/issues/80 and
      // https://github.com/mcavage/node-restify/issues/100
      if (!DTRACE) {
          try {
              var d = require('dtrace-provider');
              DTRACE = d.createDTraceProvider(name);
          } catch (e) {
              DTRACE = {
                  addProbe: function addProbe() {
                      var p = {
                          fire: function () {}
                      };
                      return (p);
                  },
                  enable: function enable() {},
                  fire: function fire() {},
                  removeProbe: function () {},
                  disable: function () {}
  
              };
          }
      }
      return (DTRACE);
  }
docs: Shamelessly copied from https://github.com/mcavage/node-restify