func (v ResolveWithEndpoint) ResolveEndpoint(service, region string) (Endpoint, error) {
	e := Endpoint(v)
	e.SigningRegion = region
	return e, nil
}
ResolveEndpoint returns the static endpoint.
package aws
type EndpointResolver interface {
	ResolveEndpoint(service, region string) (Endpoint, error)
}
type EndpointResolverFunc func(service, region string) (Endpoint, error)
func (fn EndpointResolverFunc) ResolveEndpoint(service, region string) (Endpoint, error) {
	return fn(service, region)
}
type ResolveWithEndpoint Endpoint
func ResolveWithEndpointURL(url string) ResolveWithEndpoint {
	return ResolveWithEndpoint(Endpoint{URL: url})
}