code: func (r Virtual_Guest_Block_Device_Template_Group) GetBlockDevices() (resp []datatypes.Virtual_Guest_Block_Device_Template, err error) {
  	err = r.Session.DoRequest("SoftLayer_Virtual_Guest_Block_Device_Template_Group", "getBlockDevices", nil, &r.Options, &resp)
  	return
  }
docs: // Retrieve The block devices that are part of an image template group