private static void AddAuthenticationToRequest(IWebClient webClient, Jira jira)
{
var credentials = jira.GetCredentials();
if (String.IsNullOrEmpty(credentials.UserName) || String.IsNullOrEmpty(credentials.Password))
{
throw new InvalidOperationException("Unable to download attachment, user and/or password are missing. You can specify a provider for credentials when constructing the Jira instance.");
}
webClient.AddQueryString("os_username", Uri.EscapeDataString(credentials.UserName));
webClient.AddQueryString("os_password", Uri.EscapeDataString(credentials.Password));
}