func (p *Process) ForEachRootPtr(r *Root, fn func(int64, Object, int64) bool) {
	edges1(p, r, 0, r.Type, fn)
}
func (p *Process) ForEachRootPtr(r *Root, fn func(int64, Object, int64) bool) {
	edges1(p, r, 0, r.Type, fn)
}
// ForEachRootPtr behaves like ForEachPtr but it starts with a Root instead of an Object.