public virtual string ToString(int depth, IStringBuilder buf)
{
if (attributeName != null)
{
buf.Append(Util.ntimes("\t", depth));
buf.Append(Util.ntimes("***", 1));
buf.Append(attributeName + " \n");
foreach (string attributeValue in nodes.GetKeys())
{
buf.Append(Util.ntimes("\t", depth + 1));
buf.Append("+" + attributeValue);
buf.Append("\n");
DecisionTree child = nodes.Get(attributeValue);
buf.Append(child.ToString(depth + 1, TextFactory.CreateStringBuilder()));
}
}
return(buf.ToString());
}