{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"gate_all_legacy_dont_use!(decl_macro,"}]}
    gate_all_legacy_dont_use!(decl_macro, "`macro` is experimental");
    gate_all_legacy_dont_use!(trait_alias, "trait aliases are experimental");
    gate_all_legacy_dont_use!(try_blocks, "`try` blocks are unstable");