public static SignatureValidationFilter buildSignatureValidationFilter(final String signatureResourceLocation) throws Exception {
        val resource = ResourceUtils.getResourceFrom(signatureResourceLocation);
        return buildSignatureValidationFilter(resource);
    }
Build signature validation filter if needed.

@param signatureResourceLocation the signature resource location
@return the metadata filter
@throws Exception the exception
support/cas-server-support-saml-core-api/src/main/java/org/apereo/cas/support/saml/SamlUtils.java