when is meteor collection find firing?

gistfile1.txt

var wrappedFind = Meteor.Collection.prototype.find;
 
Meteor.Collection.prototype.find = function () {
  var cursor = wrappedFind.apply(this, arguments);
  var collectionName = this._name;
 
  cursor.observeChanges({
    added: function (id, fields) {
      console.log(collectionName, 'added', id, fields);
    },
 
    changed: function (id, fields) {
      console.log(collectionName, 'changed', id, fields);
    },
 
    movedBefore: function (id, before) {
      console.log(collectionName, 'movedBefore', id, before);
    },
 
    removed: function (id) {
      console.log(collectionName, 'removed', id);
    }
  });
 
  return cursor;
};