my $k = $z->anchor(
        id      => 'anchor_k',
        -href   => 'http://test.hackmare.com/',
        target => 'new_window_0'
    )->rectangle(
        x     => 20, y      => 50,
        width => 20, height => 30,
        rx    => 10, ry     => 5,
        id    => 'rect_k_in_anchor_k_in_group_z'
    );