code: func (r Virtual_Guest_Block_Device_Template_Group) AddSupportedBootMode(bootMode *string) (resp bool, err error) {
  	params := []interface{}{
  		bootMode,
  	}
  	err = r.Session.DoRequest("SoftLayer_Virtual_Guest_Block_Device_Template_Group", "addSupportedBootMode", params, &r.Options, &resp)
  	return
  }
docs: // This method allows you to mark this image's supported boot modes as 'HVM' or 'PV'.