code: func New(lDs, gDs interface{}, dfn DriverNotifyFunc, ifn IPAMNotifyFunc, pg plugingetter.PluginGetter) (*DrvRegistry, error) {
  	r := &DrvRegistry{
  		drivers:      make(driverTable),
  		ipamDrivers:  make(ipamTable),
  		dfn:          dfn,
  		ifn:          ifn,
  		pluginGetter: pg,
  	}
  
  	return r, nil
  }
docs: // New returns a new driver registry handle.