{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"//"}]}
    // replace the self type of the trait ref with `Self` so that diagnostics render better.
    let trait_m_sig = tcx.liberate_late_bound_regions(impl_m.def_id, bound_trait_m_sig);
    let trait_m_sig_with_self_for_diag = tcx.liberate_late_bound_regions(