docs/code-frags/counter-col/lib/CounterCol.js
function(objects, options) {
          var self = this
          objects.forEach(function(object) {
            self.cache[object._id] = object
          })
          return objects
        }
function(objects, options) {
          var self = this
          objects.forEach(function(object) {
            self.cache[object._id] = object
          })
          return objects
        }
pre-insert-memCacheCounterAdvanced