Adding method doc blocks for cache File adapter.
Adding method doc blocks for cache File adapter.

m4rcsch/lithium-core-library,SensCritique/lithium,davidpersson/lithium,m4rcsch/lithium-core-library,jails/lithium,graphis/lithium,jails/lithium,UnionOfRAD/lithium,muyehub/lithium,pixelcog/lithium,mehlah/lithium,whowgames/lithium,graphis/lithium,m4rcsch/li3_framework,qoqa/lithium,UnionOfRAD/framework,SensCritique/lithium,datachand/lithium,wbeater/lithium,whowgames/lithium,pixelcog/lithium,muyehub/lithium,UnionOfRAD/lithium,mehlah/lithium,davidpersson/lithium,datachand/lithium,wbeater/lithium,qoqa/lithium