import java.net.URL;
import java.util.Optional;
+import net.pterodactylus.fcp.NodeRef;
import net.pterodactylus.fcp.Peer;
/**
Executable<Optional<Peer>> fromFile(File file);
Executable<Optional<Peer>> fromURL(URL url);
+ Executable<Optional<Peer>> fromNodeRef(NodeRef nodeRef);
}