{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"BuiltinLintDiag::RawPrefix(label_span)"}]}
        BuiltinLintDiag::RawPrefix(label_span) => {
        }
            lints::RawPrefix { label: label_span, suggestion: label_span.shrink_to_hi() }