syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"c_variadic:"}]}
source_snippet:             c_variadic: a.c_variadic,
context_before:             inputs_and_output: cx.mk_type_list_from_iter(inputs_and_output)?,
context_after:             safety: a.safety,