agent/dockerclient/sdkclientfactory/versionsupport_unix.go
func (f *factory) GetClient(version dockerclient.DockerVersion) (sdkclient.Client, error) {
	return f.getClient(version)
}
func (f *factory) GetClient(version dockerclient.DockerVersion) (sdkclient.Client, error) {
	return f.getClient(version)
}
// GetClient on linux will simply return the cached client from the map