Returns the next input Token whose termText() is the right len
// return the first non-stop word found
for (Token token = input.next(); token != null; token = input.next())
{
int len = token.termText().length();
if (len >= min && len <= max) {
return token;
}
// note: else we ignore it but should we index each part of it?
}
// reached EOS -- return null
return null;
