{"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"PatKind::Slice(before,"}]}
            PatKind::Slice(before, slice, after) => {
            PatKind::Ref(inner, mutbl) => self.check_pat_ref(pat, inner, mutbl, expected, pat_info),
                self.check_pat_slice(pat.span, before, slice, after, expected, pat_info)