syntax_data: {"ast_node_type":"other","tokens":[{"end":43,"kind":"keyword","start":0,"text":"const"}]}
source_snippet: const MAX_LEN: u32 = 0b0111_1111_1111_1110;
context_before: // `BASE_LEN_INTERNED_MARKER`. (If `MAX_LEN` was 1 higher, this wouldn't be true.)
context_after: const MAX_CTXT: u32 = 0b0111_1111_1111_1110;