.onBound()

This method is not implemented by can-event-queue/value/value. Instead, the object should implement it if it wants to perform some actions when it becomes unbound.

var mixinValueBindings = require("can-event-queue/value/value");

var observable = mixinValueBindings({
  onUnbound: function(){
    console.log("I AM UNBOUND!");
  }
});
var handler = function(){}
observable.on(function(){});
observable.off(function(){});
// Logs: "I AM UNBOUND!"