class Aws::Partitions::EndpointProvider

def build_is_global_fn(sts_regional_endpoints='regional')
  lambda do |service, region, endpoints, service_cfg|
    # Check for sts legacy behavior
    sts_legacy = service == 'sts' &&
      sts_regional_endpoints == 'legacy' &&
      STS_LEGACY_REGIONS.include?(region)
    is_global = !endpoints.key?(region) &&
      service_cfg['isRegionalized'] == false
    sts_legacy || is_global
  end
end