docs: function(connectionName, collectionName, query, params, consistency, cb) {
  
        if (_.isFunction(params)) {
          cb = params;
          params = null;
        }
  
        var connectionObject = connections[connectionName];
        var collection = connectionObject.collections[collectionName];
  
        // Do raw query using collection's query method
        collection.query(query, params, consistency, function (err, result) {
          if (err) return cb(err);
          cb(null, result);
        });
      }