syntax_data: {"ast_node_type":"function","tokens":[{"end":89,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn extract_binding_mode(&self, s: &Session, id: HirId, sp: Span) -> BindingMode {
context_before:     /// (after match ergonomics adjustments).
context_after:         self.pat_binding_modes().get(id).copied().unwrap_or_else(|| {