package com.net2plan.gui.utils;
<BUG>import java.sql.Time;</BUG>
import java.util.*;
import org.apache.commons.collections15.BidiMap;
import org.apache.commons.collections15.bidimap.DualHashBidiMap;
import com.net2plan.interfaces.networkDesign.NetPlan;
import com.net2plan.interfaces.networkDesign.NetworkLayer;
import com.net2plan.utils.Triple;
public class UndoRedoManager
<BUG>{
private List<TimelineState> pastInfoVsNewNp;</BUG>
private int pastInfoVsNewNpCursor;

package com.net2plan.gui.utils;
import java.util.*;
import org.apache.commons.collections15.BidiMap;
import org.apache.commons.collections15.bidimap.DualHashBidiMap;
import com.net2plan.interfaces.networkDesign.NetPlan;
import com.net2plan.interfaces.networkDesign.NetworkLayer;
import com.net2plan.utils.Triple;
public class UndoRedoManager
{
private final IVisualizationCallback callback;
private List<TimelineState> pastInfoVsNewNp;
private int pastInfoVsNewNpCursor;
