Fix serializer to properly serialize relationship for castings
Fix serializer to properly serialize relationship for castings

MiLk/hummingbird,erengy/hummingbird,xhocquet/hummingbird,paladique/hummingbird,hummingbird-me/hummingbird,jcoady9/hummingbird,xhocquet/hummingbird,MiLk/hummingbird,jcoady9/hummingbird,vevix/hummingbird,saintsantos/hummingbird,qgustavor/hummingbird,erengy/hummingbird,erengy/hummingbird,cybrox/hummingbird,wlads/hummingbird,paladique/hummingbird,hummingbird-me/hummingbird,NuckChorris/hummingbird,NuckChorris/hummingbird,jcoady9/hummingbird,Snitzle/hummingbird,xhocquet/hummingbird,xhocquet/hummingbird,astraldragon/hummingbird,qgustavor/hummingbird,saintsantos/hummingbird,xhocquet/hummingbird,jcoady9/hummingbird,astraldragon/hummingbird,xhocquet/hummingbird,sidaga/hummingbird,Snitzle/hummingbird,astraldragon/hummingbird,synthtech/hummingbird,vevix/hummingbird,wlads/hummingbird,Snitzle/hummingbird,MiLk/hummingbird,vevix/hummingbird,xhocquet/hummingbird,astraldragon/hummingbird,sidaga/hummingbird,paladique/hummingbird,wlads/hummingbird,Snitzle/hummingbird,qgustavor/hummingbird,saintsantos/hummingbird,MiLk/hummingbird,synthtech/hummingbird,sidaga/hummingbird,wlads/hummingbird,vevix/hummingbird,NuckChorris/hummingbird,saintsantos/hummingbird,erengy/hummingbird,qgustavor/hummingbird,NuckChorris/hummingbird,paladique/hummingbird,sidaga/hummingbird