private X509Certificate2 GetCertificate()
        {
            const string certificatePath =
                "IdentityServer4.RavenDB.Storage.Tests.DocumentStoreHolderTests.certificate.txt";

            var cert = EmbeddedResourceHelper.GetFileContent(certificatePath);

            var bytes = Convert.FromBase64String(cert);

            return(new X509Certificate2(bytes));
        }