code: func (r Network_Gateway_VersionUpgrade) GetAllByFromVersion(fromVersion *string) (resp []datatypes.Network_Gateway_VersionUpgrade, err error) {
  	params := []interface{}{
  		fromVersion,
  	}
  	err = r.Session.DoRequest("SoftLayer_Network_Gateway_VersionUpgrade", "getAllByFromVersion", params, &r.Options, &resp)
  	return
  }
docs: // no documentation yet