code: public static List<TriggerDefinition> fromSchema(Row serializedTriggers)
      {
          List<TriggerDefinition> triggers = new ArrayList<>();
          String query = String.format("SELECT * FROM %s.%s", Keyspace.SYSTEM_KS, SystemKeyspace.SCHEMA_TRIGGERS_CF);
          for (UntypedResultSet.Row row : QueryProcessor.resultify(query, serializedTriggers))
          {
              String name = row.getString(TRIGGER_NAME);
              String classOption = row.getMap(TRIGGER_OPTIONS, UTF8Type.instance, UTF8Type.instance).get(CLASS);
              triggers.add(new TriggerDefinition(name, classOption));
          }
          return triggers;
      }
docs: Deserialize triggers from storage-level representation.
  
  @param serializedTriggers storage-level partition containing the trigger definitions
  @return the list of processed TriggerDefinitions