Chance Adaptor#noop for Adaptor#_noop.

lib/adaptor.js

@@ -65,7 +65,7 @@ Adaptor.prototype.disconnect = function(callback) {
 // with anything after disconnect has been called.
 //
 // Returns nothing
-Adaptor.prototype.noop = function() {
+Adaptor.prototype._noop = function() {
   var fnVoid = (function(command) {
     this[command] = function() {return null };
   }).bind(this);