code: @Override
      public Collection<Task> getAppTasks(ApplicationDefinition appDef) {
          List<Task> appTasks = new ArrayList<>();
          for (TableDefinition tableDef : appDef.getTableDefinitions().values()) {
              String dataAgingFreq = getDataAgingFreq(tableDef);
              if (dataAgingFreq != null) {
                  Task task = new SpiderDataAger(tableDef, dataAgingFreq);
                  appTasks.add(task);
              }
          }
          return appTasks;
      }
docs: validateSchema