{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"walk_flat_map_param(Param)"}]}
    walk_flat_map_param(Param) => visit_param;
    walk_flat_map_variant(Variant) => visit_variant;
    walk_flat_map_generic_param(GenericParam) => visit_generic_param;