X509Certificate2 GetCertificate(string templateId)
		{
			if (_certificateContainer == null)
				return null;

            if (templateId.IsNullOrWhiteSpace())
                return _certificateContainer.DefaultCertificate;

            var path = _knowledgeManager.GetFullPathById(templateId);

            return _certificateContainer.Certificates
                .Where(c => path.Contains(c.Key) && c.Key.IsNullOrWhiteSpace().Not())
                .DefaultIfEmpty(new KeyValuePair<string, X509Certificate2>("", _certificateContainer.DefaultCertificate))
                .FirstOrDefault().Value;
		}