sub get_feed {
    my ($self, $feed, %opts) = @_;
    if (ref($feed)){
        return $feed if $feed->isa('XML::Atom::Feed');
        if ($feed->isa('URI')) {
            my %params = ($self->{_auth}->auth_params('GET', $feed), %opts);
            my $r   = $self->{_ua}->get("$feed", %params);

            my $redirect_tries = 0;
            while ($r->code == 302 || $r->code == 301) {
                my $location = $r->header('location');
                %params = ($self->{_auth}->auth_params('GET', $location), %opts);
                $r   = $self->{_ua}->get($location, %params);
                $redirect_tries++;
            	die "Too many redirects ($redirect_tries)" 
            	  if $redirect_tries > $REDIRECT_MAX;
            }

      -->   die $r->status_line unless $r->is_success;
            $feed = $r->content;
        }
    }
    return XML::Atom::Feed->new(\$feed);
}