{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"checker.check(lang_items.copy_trait(),"}]}
    checker.check(lang_items.copy_trait(), visit_implementation_of_copy)?;
    checker.check(lang_items.async_drop_trait(), visit_implementation_of_drop)?;
    checker.check(lang_items.const_param_ty_trait(), |checker| {