syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"rustc_layout_scalar_valid_range_start,"}]}
source_snippet:         rustc_layout_scalar_valid_range_start,
context_before:         rustc_layout_scalar_valid_range_end,
context_after:         rustc_legacy_const_generics,