awr: adding abstract interface for bilinear forms
awr: adding abstract interface for bilinear forms

yangf4/core,yangf4/core,YetAnotherMinion/core,yangf4/core,YetAnotherMinion/core,YetAnotherMinion/core,yangf4/core,YetAnotherMinion/core,yangf4/core,YetAnotherMinion/core