{"ast_node_type":"impl","tokens":[{"end":85,"kind":"keyword","start":0,"text":"//"}]}
        // - inside an impl of `Diagnostic`, `Subdiagnostic`, or `LintDiagnostic`, or
        // Calls to `#[rustc_lint_diagnostics]`-marked functions should only occur:
        // - inside a parent function that is itself marked with `#[rustc_lint_diagnostics]`.