// overrideAuth specifies the token to authenticate the request with. token == "" is not allowed
func overrideAuth(token *string, req *client.Request) (*client.Request, error) {
if token != nil {
if len(*token) == 0 {
return nil, errors.New("impersonating token may not be empty")
}
req.SetHeader("Authorization", fmt.Sprintf("Bearer %s", *token))
}
return req, nil
}
