public void removeCommandFromHistory(List<ICommand> commands) {
for (ICommand.CommandTag tag : ICommand.CommandTag.values()) {
commandTagListHashMap.get(tag).removeAll(commands);
}
}
public CommandTagListMap() {
for (ICommand.CommandTag tag : ICommand.CommandTag.values()) {
commandTagListHashMap.put(tag, new ArrayList<ICommand>());
}
}