func (f *Fac) AddResource(tran *trans.Transaction) {
fmt.Println(f.Id(), " getting qty=", tran.Resource().Qty(), "of", f.InCommod)
err := f.inBuff.Push(tran.Manifest...)
check(err)
}
func (f *Fac) RemoveResource(tran *trans.Transaction) {
fmt.Println(f.Id(), " sending qty=", tran.Resource().Qty(), "of", f.OutCommod)
rs, err := f.outBuff.PopQty(tran.Resource().Qty())
check(err)
tran.Manifest = rs
}