{"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"left_after:"}]}
                    left_after: l_span.shrink_to_hi(),
                    left_before: (l_ty_refs != 0).then_some(l_span.shrink_to_lo()),
                    right_before: (r_ty_refs != 0).then_some(r_span.shrink_to_lo()),