sub to_hashref
{
my ($self) = @_;
$self->[IDX_USED] ||= {};
return $self->[IDX_USED];
}
*TO_JSON = \&to_hashref;
sub rdfa
{
my ($self) = @_;
my $rv;
foreach my $prefix (sort keys %$self)
{
("%s => %s\n", $prefix, $context->{$prefix});
}
=item C<< TO_JSON >>
A synonym for to_hashref, provided for the benefit of the L<JSON> package.
=item C<< rdfa >>
Return the same data as C<to_has