code: private TenantDefinition getTenantDef(String tenantName) {
          DRow tenantDefRow = DBService.instance().getRow(TENANTS_STORE_NAME, tenantName);
          if (tenantDefRow == null) {
              return null;
          }
          return loadTenantDefinition(tenantDefRow);
      }
docs: Get the TenantDefinition for the given tenant. Return null if unknown.