code: func (r Virtual_Guest_Block_Device_Template_Group) IsByolOnlyOperatingSystem() (resp bool, err error) {
  	err = r.Session.DoRequest("SoftLayer_Virtual_Guest_Block_Device_Template_Group", "isByolOnlyOperatingSystem", nil, &r.Options, &resp)
  	return
  }
docs: // This method indicates whether or not this image uses an operating system that requires using a customer supplied license image