List<Object> keyInfoContent = signatureType.getKeyInfo().getContent();
if (keyInfoContent.size() != 1) {
securityContext.handleBSPRule(BSPRule.R5402);
}
SecurityTokenReferenceType securityTokenReferenceType = XMLSecurityUtils.getQNameType(keyInfoContent,
WSSConstants.TAG_wsse_SecurityTokenReference);
if (securityTokenReferenceType == null) {
securityContext.handleBSPRule(BSPRule.R5417);
}