syntax_data: {"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"ExternalSourceKind::Present(Arc::new(src))"}]}
source_snippet:                         ExternalSourceKind::Present(Arc::new(src))
context_before:                     *src_kind = if let Some(src) = src {
context_after:                     } else {