if !ok || t == nil {
		return make([]T, 0, sz)
	}
	t2 := *t
	return t2[:0]
}

func (p *ArrayOf[T]) putA(v []T) {
	var zero T // nil
	for i, t := range v {
		p.ePool.Put(t)
		v[i] = zero
	}
	if v != nil {
		v = v[:0]
		p.aPool.Put(&v)
	}
}

func (p *ArrayOf[T]) newE() T {
	return p.ePool.Get().(T)
}

	// together. Services with an identical Group are returned in
	// the same answer.
	Group string `json:"group,omitempty"`

	// Key carries the original key used during Put().
	Key string `json:"-"`