syntax_data: {"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                     // this is similar to how ReprOptions populates its field_shuffle_seed
context_before:                 .map(|mut layout| {
context_after:                     layout.randomization_seed = tcx.def_path_hash(def_id).0.to_smaller_hash();