docs: function (callback) {
          if (self.options.sagaPath === '') {
            self.sagas = {};
            debug('empty sagaPath defined so no sagas will be loaded...');
            return callback(null);
          }
          debug('load saga files...');
          self.structureLoader(self.options.sagaPath, function (err, sagas, warns) {
            if (err) {
              return callback(err);
            }
            warnings = warns;
            self.sagas = attachLookupFunctions(sagas);
            callback(null);
          });
        }