func (f *finder) At(ctx context.Context, at, after int64) (swarm.Chunk, feeds.Index, feeds.Index, error) {
	e, ch, err := f.common(ctx, at, after)
	if err != nil {
		return nil, nil, nil, err
	}
	ch, err = f.at(ctx, uint64(at), e, ch)
	return ch, nil, nil, err
}
// At looks up the version valid at time `at`
// after is a unix time hint of the latest known update
At looks up the version valid at time `at`
after is a unix time hint of the latest known update
// At looks up the version valid at time ` at ` // after is a unix time hint of the latest known update
func (f *finder) At(ctx context.Context, at, after int64) (swarm.Chunk, feeds.Index, feeds.Index, error) {
	e, ch, err := f.common(ctx, at, after)
	if err != nil {
		return nil, nil, nil, err
	}
	ch, err = f.at(ctx, uint64(at), e, ch)
	return ch, nil, nil, err
}
func ( f * finder ) At ( ctx context . Context , at , after int64 ) ( swarm . Chunk , feeds . Index , feeds . Index , error ) { e , ch , err := f . common ( ctx , at , after ) if err != nil { return nil , nil , nil , err } ch , err = f . at ( ctx , uint64 ( at ) , e , ch ) return ch , nil , nil , err }
At looks up the version valid at time `at`
after is a unix time hint of the latest known update
At looks up the version valid at time ` at ` after is a unix time hint of the latest known update