storage/storage_reference.go
func (s storageReference) Transport() types.ImageTransport {
	return &storageTransport{
		store:         s.transport.store,
		defaultUIDMap: s.transport.defaultUIDMap,
		defaultGIDMap: s.transport.defaultGIDMap,
	}
}
func (s storageReference) Transport() types.ImageTransport {
	return &storageTransport{
		store:         s.transport.store,
		defaultUIDMap: s.transport.defaultUIDMap,
		defaultGIDMap: s.transport.defaultGIDMap,
	}
}
// Return a Transport object that defaults to using the same store that we used
// to build this reference object.