anchor.diff:          //TODO: Implement delete
         }
       } else {
  -      database.commit(inserts: inserts, deletes: deletes);
  +      ae.context.services.db.commit(inserts: inserts, deletes: deletes);
       }
       return new Future.value(null);
     }
  
positive.code:       database = new Map();
        this.test = true;
      } else {
        database = ae.context.services.db;
        this.test = false;
      }
    }
  
negative.code:         }
        }
      } else {
        var query = ae.context.services.db.query(dbClass)..filter(attribute, value);
        result = await query.run().toList();
      }
      return new Future.value(result);
  