docs: function(event, params, callback) {
              if (!callback && utils.isFunction(params)) {
                  callback = params;
                  params = {};
              }
              
              callback = callback || function() {};
              params = params || {};
              
              // Add the index name
              params["index"] = this.name;
              
              var that = this;
              return this.service.log(event, params, function(err, result) {
                  callback(err, result, that); 
              });
          }