YouareemployedasaWebApplicationDeveloperatCertkiller.com.YoumakeuseofMicrosoft.NETFrameworkv3.5tocreateanASP.NETapplication.Youcreateaclassintheapplicationthatcontainsthecodebelow.（Thelinenumbersisincludedforreferencepurposes）01publicobjectGetCachedProducts（sqlConnectionconn）{0203if（Cache[products]==null）{04SqlCommandcmd=newSqlCommand（SELECT*FROMProducts，conn）；05conn.Open（）；06Cache.Insert（products，GetData（cmd））；07conn.Close（）；08}09returnCache[products]；10}1112publicobjectGetData（SqlCommandprodCmd）{1314}YounoticethattheGetCachedProductsmethodiscalledtoprovidethislistfromtheCacheobjecteverytimeaWebformhastoaccessalistofproducts.ToensureproductivitymanagementwantsyoutomakesurethatthereisalwaysalistofproductsavailableintheCacheobject.Youthusneedtodeterminetheappropriatecodethatshouldbeaddedinline13.Whatshouldyouidentify？（）
YouareemployedasaWebApplicationDeveloperatCertkiller.com.YoumakeuseofMicrosoft.NETFrameworkv3.5tocreateanASP.NETapplication.
Youcreateaclassintheapplicationthatcontainsthecodebelow.（Thelinenumbersisincludedforreferencepurposes）
01publicobjectGetCachedProducts（sqlConnectionconn）{
02
03if（Cache["products"]==null）{
04SqlCommandcmd=newSqlCommand（"SELECT*FROMProducts"，conn）；
05conn.Open（）；
06Cache.Insert（"products"，GetData（cmd））；
07conn.Close（）；
08}
09returnCache["products"]；
10}
11
12publicobjectGetData（SqlCommandprodCmd）{
13
14}
YounoticethattheGetCachedProductsmethodiscalledtoprovidethislistfromtheCacheobjecteverytimeaWebformhastoaccessalistofproducts.ToensureproductivitymanagementwantsyoutomakesurethatthereisalwaysalistofproductsavailableintheCacheobject.Youthusneedtodeterminetheappropriatecodethatshouldbeaddedinline13.
Whatshouldyouidentify？（）
