def METHOD_NAME(draw):
    if draw:
        rng.normal_element(U_mom)
        s = action_gauge(U)
        if not pure_gauge:
            # sp = sd(fields)
            for i in range(len(hasenbusch_ratios)):
                if hasenbusch_ratios[i][3] is not two_flavor_ratio:
                    si = action_fermions_e[i].draw(fields[i], rng, hasenbusch_ratios[i][2])
                    # si = sp[i]
                    si_check = action_fermions_e[i](fields[i])
                    g.message("action", i, si_check)
                    r = f"{hasenbusch_ratios[i][0]}/{hasenbusch_ratios[i][1]}"
                    e = abs(si / si_check - 1)
                    g.message(f"Error of rational approximation for Hasenbusch ratio {r}: {e}")
                else:
                    si = action_fermions_e[i].draw(fields[i], rng)
                s += si
        h = s + action_gauge_mom(U_mom)
    else:
        s = action_gauge(U)
        if not pure_gauge:
            for i in range(len(hasenbusch_ratios)):
                s += action_fermions_e[i](fields[i])
        h = s + action_gauge_mom(U_mom)
    return h, s