drivers/google/compute_util.go
func (c *ComputeUtil) instance() (*raw.Instance, error) {
	return c.service.Instances.Get(c.project, c.zone, c.instanceName).Do()
}
func (c *ComputeUtil) instance() (*raw.Instance, error) {
	return c.service.Instances.Get(c.project, c.zone, c.instanceName).Do()
}
// instance retrieves the instance.