...

prerequisite {package require gistbox}
set listbox \
    [$target listbox]
append output  \
    [dumper::embeddedListbox $ta_name  \
    [vgcode::baseName $listbox $basename $id_base]  \
    [vgcode::dump-configure $listbox  \
    [vgcode::baseName $listbox $basename $id_base]  $basename $id_base  \
    [getClass $listbox \
    [winfo class $listbox]]  $class]]  \
    [dumper::listbox $ta_name  \
    [$target Elements]]