SystemPropertyService
In order to init SystemPropertyService bean need to use - Imcms.getServices().getManagedBean(SystemPropertyService.class)
Use API
List<SystemProperty> findAll();
SystemProperty findByName(String name);
SystemProperty update(SystemProperty systemProperty);
void deleteById(Integer id);
SystemProperty findById(Integer id);
Example usages
SystemPropertyService systemPropertyService = Imcms.getServices().getManagedBean(SystemPropertyService.class);
SystemProperty systemPropertyName = systemPropertyService.findByName("systemPropertyName");
systemPropertyName.setValue("false");
systemPropertyService.update(systemPropertyName);
List<SystemProperty> allProps = systemPropertyService.findAll();