[modify] clean code
[modify] clean code

ShinjiTanimoto/shirasagi,shirasagi/shirasagi,MasakiInaya/shirasagi,shirasagi/shirasagi,shirasagi/ss-handson,itowtips/shirasagi,sunny4381/shirasagi,ShinjiTanimoto/shirasagi,sunny4381/shirasagi,itowtips/shirasagi,tany/ss,mizoki/shirasagi,sunny4381/shirasagi,MasakiInaya/shirasagi,shirasagi/ss-handson,shirasagi/shirasagi,tany/ss,itowtips/shirasagi,shirasagi/ss-handson,ShinjiTanimoto/shirasagi,tany/ss,mizoki/shirasagi,mizoki/shirasagi,shirasagi/shirasagi,ShinjiTanimoto/shirasagi,tany/ss,MasakiInaya/shirasagi,itowtips/shirasagi,mizoki/shirasagi,shirasagi/ss-handson,sunny4381/shirasagi,MasakiInaya/shirasagi