/// <summary>
/// Stem a word.
/// </summary>
/// <param name="word">input word to be stemmed.</param>
/// <returns>stemmed word, or null if the stem could not be generated.</returns>
public StringBuilder Stem(string word)
{
string cmd = stemmer.GetLastOnPath(word);
if (cmd == null)
{
return(null);
}
buffer.Length = 0;
buffer.Append(word);
Diff.Apply(buffer, cmd);
if (buffer.Length > 0)
{
return(buffer);
}
else
{
return(null);
}
}
