Adding missing return tags to service class.
Adding missing return tags to service class.

Removing author tag.

muyehub/lithium,graphis/lithium,jails/lithium,muyehub/lithium,wbeater/lithium,whowgames/lithium,jails/lithium,m4rcsch/lithium-core-library,davidpersson/lithium,UnionOfRAD/lithium,graphis/lithium,wbeater/lithium,datachand/lithium,datachand/lithium,davidpersson/lithium,pixelcog/lithium,pixelcog/lithium,whowgames/lithium,UnionOfRAD/lithium,m4rcsch/lithium-core-library