docs: public void setActivate(RuleProxyField ruleProxyField,
              RuleContext ruleContext)
      {
          if (ruleProxyField.isInActive()) // only do it if the field changes
          {
              m_activateFields.add(ruleProxyField.getProxyField());
              ruleContext.addActivate(ruleProxyField);
          }
      }