[split] fussy little changes to make some return types more explicit.
[split] fussy little changes to make some return types more explicit.


LitmusHealth/twitter-utils,mosesn/util,edombowsky/util,travisbrown/util,stremlenye/util,hydro2k/util,twitter/util,BuoyantIO/twitter-util,slackhappy/util,folone/util,cogitate/twitter-util-uuid,Jiri-Kremser/util,BuoyantIO/twitter-util,luciferous/util,cogitate/twitter-util-uuid,travisbrown/util,nkhuyu/util,travisbrown/util,wuqiangxjtu/util,hydro2k/util,wuqiangxjtu/util,LitmusHealth/twitter-utils,Jiri-Kremser/util,slackhappy/util,Jiri-Kremser/util,stremlenye/util,LitmusHealth/twitter-utils,folone/util,RUNDSP/util,folone/util,edombowsky/util,nkhuyu/util,tdyas/util,tenghuihua/util,slackhappy/util,tdyas/util,edombowsky/util,tdyas/util,RUNDSP/util,luciferous/util,tdyas/util,hydro2k/util,luciferous/util,BuoyantIO/twitter-util,twitter/util,edombowsky/util,folone/util,tenghuihua/util,wuqiangxjtu/util,hydro2k/util,cogitate/twitter-util-uuid,mosesn/util,nkhuyu/util,cogitate/twitter-util-uuid,slackhappy/util,nkhuyu/util,tenghuihua/util,RUNDSP/util,BuoyantIO/twitter-util,mosesn/util,wuqiangxjtu/util,RUNDSP/util,stremlenye/util,stremlenye/util,travisbrown/util,LitmusHealth/twitter-utils,tenghuihua/util,Jiri-Kremser/util,luciferous/util,twitter/util