// The implements function, which checks to see if an object declares that it
// implements the required interfaces.
function implements(object) {
      for(var i = 1; i < arguments.length; i++) {
           var interfaceName = arguments[i];
           var interfaceFound = false;

      for(var j = 0; j < object.implementsInterfaces.length; j++) {
           if(object.implementsInterfaces[j] == interfaceName) {
               interfaceFound = true;
               break;
            }
        }

      if(!interfaceFound) {
         return false; // An interface was not found.
       }
     }
   return true; // All interfaces were found.
}