Function rustc_ty_utils::instance::resolve_associated_item

fn resolve_associated_item<'tcx>(
    tcx: TyCtxt<'tcx>, 
    trait_item: &AssocItem, 
    param_env: ParamEnv<'tcx>, 
    trait_id: DefId, 
    rcvr_substs: SubstsRef<'tcx>
) -> Result<Option<Instance<'tcx>>, ErrorReported>