code: function (script, args, hash) {
      this.actionQueue.push(this.webdriverClient.execute.bind(this.webdriverClient, {script: script.toString(), arguments: args}));
      this.actionQueue.push(this._setExecuteCb.bind(this, script.toString(), args, hash));
      return this;
    }
docs: Executes a JavaScript function
  
  @method execute
  @param {function} script Script to execute
  @param {array} args Arguments to pass to the function
  @param {string} hash Unique hash of that fn call
  @chainable