use BEventBuilder and GenericKeyComposerBBuilder in AlphaTwirl.py
use BEventBuilder and GenericKeyComposerBBuilder in AlphaTwirl.py

TaiSakuma/AlphaTwirl,alphatwirl/alphatwirl,alphatwirl/alphatwirl,alphatwirl/alphatwirl,alphatwirl/alphatwirl,TaiSakuma/AlphaTwirl