syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"name:"}]}
source_snippet:                         name: field_name.unwrap_or_else(|| {
context_before:                         kind: FieldKind::CoroutineLocal,
context_after:                             Symbol::intern(&format!(".coroutine_field{}", local.as_usize()))