code: func WithLoadBalancePolicy(value lbp.LoadBalancePolicy) options.Opt {
  	return func(p options.Params) {
  		if setter, ok := p.(loadBalancePolicySetter); ok {
  			setter.SetLoadBalancePolicy(value)
  		}
  	}
  }
docs: // WithLoadBalancePolicy sets the load-balance policy to use when
  // choosing an event endpoint from a set of endpoints