example/dist/production.js
function() {
                    if (!tornDown) {
                        tornDown = true;
                        unbind(data);
                        can.unbind.call(el, 'removed', teardown);
                    }
                    return true;
                }
function() {
                    if (!tornDown) {
                        tornDown = true;
                        unbind(data);
                        can.unbind.call(el, 'removed', teardown);
                    }
                    return true;
                }
function ( ) { if ( ! tornDown ) { tornDown = true ; unbind ( data ) ; can . unbind . call ( el , 'removed' , teardown ) ; } return true ; }
Removing an element can call teardown which unregister the nodeList which calls teardown
Removing an element can call teardown which unregister the nodeList which calls teardown