{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"self.check_array_pat_len(span,"}]}
                    self.check_array_pat_len(span, element_ty, expected, slice, len, min);
                let (opt_slice_ty, expected) =
                // `opt_slice_ty.is_none()` => `slice.is_none()`.