syntax_data: {"ast_node_type":"import","tokens":[{"end":75,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // Interned ctxt should never be read, so it can use any value.
context_before:         if ctxt32 <= MAX_CTXT {
context_after:             PartiallyInterned::span(index(SyntaxContext::from_u32(u32::MAX)), ctxt32 as u16)