syntax_data: {"ast_node_type":"function","tokens":[{"end":94,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn map_prefix<'a>(&'a self, path: impl Into<Cow<'a, Path>>) -> (Cow<'a, Path>, bool) {
context_before:     /// the path was affected by the mapping.
context_after:         let path = path.into();