syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"match"}]}
source_snippet:         match self.span_to_prev_source(sp) {
context_before:     pub fn is_line_before_span_empty(&self, sp: Span) -> bool {
context_after:             Ok(s) => s.rsplit_once('\n').unwrap_or(("", &s)).1.trim_start().is_empty(),