syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"//"}]}
source_snippet: // are present, regardless of whether those bound variables are used. This
context_before: // add `HAS_{RE,TY,CT}_LATE_BOUND` flag depending on the *bound variables* that
context_after: // is important for anonymization of binders in `TyCtxt::erase_regions`. We