code: func (g *Cloud) UpdateAlphaHealthCheck(hc *computealpha.HealthCheck) error {
  	ctx, cancel := cloud.ContextWithCallTimeout()
  	defer cancel()
  
  	mc := newHealthcheckMetricContextWithVersion("update", computeAlphaVersion)
  	return mc.Observe(g.c.AlphaHealthChecks().Update(ctx, meta.GlobalKey(hc.Name), hc))
  }
docs: // UpdateAlphaHealthCheck applies the given alpha HealthCheck as an update.