{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"for"}]}
    for (call_id, transparency) in ctxt.marks(db) {
    // See the example at `test/ui/hygiene/legacy_interaction.rs`.
        call_site_ctxt = apply_mark_internal(db, call_site_ctxt, call_id, transparency, edition);