syntax_data: {"ast_node_type":"other","tokens":[{"end":12,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// `c`.
context_before:     /// Given a `Span`, tries to get a shorter span ending just after the first occurrence of `char`
context_after:     pub fn span_through_char(&self, sp: Span, c: char) -> Span {