I'm using the ITfoxtec Identity SAML2 library with Keycloak as IdP. When requesting the IdP metadata information, the ITfoxtec Identity SAML2 library seems not to recognize the <EntitiesDescriptor> tag and expects a <EntityDescriptor> as the top level element in the metadata xml. Use of <EntitiesDescriptor> is described in https://docs.oasis-open.org/security/saml/v2.0/saml-metadata-2.0-os.pdf