docstring cleanup
docstring cleanup

wrobstory/vincent,CrazyGuo/vincent,CrazyGuo/vincent,xunyou/vincent,JPO1/vincent,qiwsir/vincent,wrobstory/vincent,myusuf3/vincent,chiu/vincent,taohaoge/vincent,KAPPS-/vincent,JPO1/vincent,xunyou/vincent,myusuf3/vincent,chiu/vincent,qiwsir/vincent,springcoil/vincent,springcoil/vincent,taohaoge/vincent,KAPPS-/vincent