code: function _proxyRequest(json, callback) {
  	  var rollbarProxy = new RollbarProxy();
  	  rollbarProxy.sendJsonPayload(
  	    json,
  	    function(_msg) { /* do nothing */ }, // eslint-disable-line no-unused-vars
  	    function(err) {
  	      callback(new Error(err));
  	    }
  	  );
  	}
docs: /* global RollbarProxy