code: func (r Virtual_Guest) GetBlockDeviceTemplateGroup() (resp datatypes.Virtual_Guest_Block_Device_Template_Group, err error) {
  	err = r.Session.DoRequest("SoftLayer_Virtual_Guest", "getBlockDeviceTemplateGroup", nil, &r.Options, &resp)
  	return
  }
docs: // Retrieve The global identifier for the image template that was used to provision or reload a guest.