Plucene::Plugin::Analyzer::SnowballFilter - Snowball stemming on the token stream

	# isa Plucene::Analysis:::TokenFilter

	my $token = $porter_stem_filter->next;

This class transforms the token stream as per the Snowball stemming algorithm.

You can find more information on the Snowball algorithm at http://snwoball.tartarus.org/.

	my $token = $porter_stem_filter->next;

Returns the next input token, after being stemmed.