# include <saml/saml2/binding/SAML2SOAPClient.h>
# include <saml/saml2/metadata/EndpointManager.h>
# include <saml/saml2/metadata/MetadataCredentialCriteria.h>
+# include <saml/signature/ContentReference.h>
# include <xmltooling/security/Credential.h>
+# include <xmltooling/signature/Signature.h>
using namespace opensaml::saml2;
using namespace opensaml::saml2p;
using namespace opensaml::saml2md;