syntax_data: {"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // the lower bits no matter the endianness. This allows the compiler to turn that `Hash` impl
context_before:     // cfg-ing the order of fields so that the `DefIndex` which is high entropy always ends up in
context_after:     // into a direct call to `u64::hash(_)`.