class Aws::S3::AccessPointARN

def host_url(region, fips = false, dualstack = false, custom_endpoint = nil)
  pfx = "#{@access_point_name}-#{@account_id}"
  if custom_endpoint
    "#{pfx}.#{custom_endpoint}"
  else
    sfx = Aws::Partitions::EndpointProvider.dns_suffix_for(region)
    "#{pfx}.s3-accesspoint#{'-fips' if fips}#{'.dualstack' if dualstack}.#{region}.#{sfx}"
  end
end