func HasChildren(rp *object.ResourcePool) (bool, error) {
	props, err := Properties(rp)
	if err != nil {
		return false, err
	}
	if len(props.Vm) > 0 || len(props.ResourcePool) > 0 {
		return true, nil
	}
	return false, nil
}
func HasChildren(rp *object.ResourcePool) (bool, error) {
	props, err := Properties(rp)
	if err != nil {
		return false, err
	}
	if len(props.Vm) > 0 || len(props.ResourcePool) > 0 {
		return true, nil
	}
	return false, nil
}
// HasChildren checks to see if a resource pool has any child items (virtual
// machines, vApps, or resource pools) and returns true if that is the case.
// This is useful when checking to see if a resource pool is safe to delete.
// Destroying a resource pool in vSphere destroys *all* children if at all
// possible, so extra verification is necessary to prevent accidental removal.