syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"(span.hi"}]}
source_snippet:                 (span.hi - def_span.lo).to_u32().hash_stable(ctx, hasher);
context_before:                 (span.lo - def_span.lo).to_u32().hash_stable(ctx, hasher);
context_after:                 return;