changed key type from class to string
changed key type from class to string

mohanaraosv/cglib,cglib/cglib,evertrue/cglib,ligzy/cglib,yseasony/cglib,lncosie/cglib,mcmakev/cglib,baishuo/cglib,mcculls/cglib,wangf111/cglib,292388900/cglib,liuyb02/cglib,xgbj/cglib,lukesandberg/cglib,HubSpot/cglib,TopicusZorg/cglib,chuz/cglib