syntax_data: {"ast_node_type":"function","tokens":[{"end":98,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn record_arg_with_span<A>(&mut self, source_map: &SourceMap, event_arg: A, span: crate::Span)
context_before: impl SpannedEventArgRecorder for EventArgRecorder<'_> {
context_after:     where