offPatches(obj, handler, [queueName])

Unregister an event handler from the object obj that had previously been registered with onPatches. The function passed as handler will no longer be called when obj has key or index changes.

var obj = new DefineMap({});
var handler = function(patches) {
    console.log(patches);
};

canReflect.onPatches(obj, handler);
canReflect.offPatches(obj, handler);

obj.set("foo", "bar");  // nothing is logged