syntax_data: {"ast_node_type":"impl","tokens":[{"end":55,"kind":"keyword","start":0,"text":"impl"}]}
source_snippet: impl SpannedEventArgRecorder for EventArgRecorder<'_> {
context_after:     fn record_arg_with_span<A>(&mut self, source_map: &SourceMap, event_arg: A, span: crate::Span)