[antlr-interest] Check the next token in Hidden Channel

[Alexander Gängel]

I hace to check in my Parser once if the next Token is a Whitspace.

I tried the code from:
http://www.antlr.org/wiki/pages/viewpage.action?pageId=557063

So is copied it to my Grammar:
@members{
    protected int skipOffTokenChannels(int i) {
        int n = tokens.size();
        while ( i<n && ((Token)tokens.get(i)).getChannel()!=channel ) {
            i++;
        }
        return i;
}
}

But the Code compains that tokens cannot be resolved?

I use 3.1 so I think there is something changed sice 3.0.

Can anybody give me an hint how to do this ?

Alexander