code: func (d *Driver) Start() error {
  	if err := d.checkLegacyDriver(true); err != nil {
  		return err
  	}
  
  	c, err := d.newAzureClient()
  	if err != nil {
  		return err
  	}
  	return c.StartVirtualMachine(d.ResourceGroup, d.naming().VM())
  }
docs: // Start issues a power on for the virtual machine instance.