code: private void addTenantProperties(TenantDefinition tenantDef) {
      	tenantDef.setProperty(CREATED_ON_PROP, Utils.formatDate(new Date().getTime()));
      	tenantDef.setProperty(MODIFIED_ON_PROP, tenantDef.getProperty(CREATED_ON_PROP));
      }
docs: Set system-defined properties for a new tenant.