package org.seqcode.gseutils.graphs.layout; import java.util.*; import org.seqcode.gseutils.graphs.*; import java.io.*; public class LayeredLayoutEngine implements LayoutEngine<DirectedGraph> { public GraphLayout layoutGraph(DirectedGraph g) { return null; } public Set<String> getParameters() { return new HashSet<String>(); } public void setParameter(String key, String value) { } }