code: function (paths) {
      var misses = [], fromCache = {};
      for (let i = 0, len = paths.length; i < len; i++) {
        if (this.changesQueued[paths[i]] !== undefined) {
          fromCache[paths[i]] = util.deepClone(this.changesQueued[paths[i]] || undefined);
        } else if(this.changesRunning[paths[i]] !== undefined) {
          fromCache[paths[i]] = util.deepClone(this.changesRunning[paths[i]] || undefined);
        } else {
          misses.push(paths[i]);
        }
      }
      if (misses.length > 0) {
        return this.getNodesFromDb(misses).then(function (nodes) {
          for (let i in fromCache) {
            nodes[i] = fromCache[i];
          }
          return nodes;
        });
      } else {
        return Promise.resolve(fromCache);
      }
    }
docs: TODO: Document