syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// determine from the HIR alone.
context_before:     /// sure to apply any match-ergonomics adjustments, which we cannot
context_after:     pub fn pat_has_ref_mut_binding(&self, pat: &hir::Pat<'_>) -> bool {