CredentialsDownloadCertificatePanel::CredentialsDownloadCertificatePanel (
DownloadCertificateDialog* dialog,
function<optional<string> ()> get_username,
CredentialsDownloadCertificatePanel::CredentialsDownloadCertificatePanel (
DownloadCertificateDialog* dialog,
function<optional<string> ()> get_username,