docs: public boolean validateSignature(final Pair<Assertion, WsFederationConfiguration> resultPair) {
          if (resultPair == null) {
              LOGGER.warn("No assertion or its configuration was provided to validate signatures");
              return false;
          }
          val configuration = resultPair.getValue();
          val assertion = resultPair.getKey();
  
          if (assertion == null || configuration == null) {
              LOGGER.warn("No signature or configuration was provided to validate signatures");
              return false;
          }
          val signature = assertion.getSignature();
          if (signature == null) {
              LOGGER.warn("No signature is attached to the assertion to validate");
              return false;
          }
  
          try {
              LOGGER.debug("Validating the signature...");
              val validator = new SAMLSignatureProfileValidator();
              validator.validate(signature);
  
              val criteriaSet = new CriteriaSet();
              criteriaSet.add(new UsageCriterion(UsageType.SIGNING));
              criteriaSet.add(new EntityRoleCriterion(IDPSSODescriptor.DEFAULT_ELEMENT_NAME));
              criteriaSet.add(new ProtocolCriterion(SAMLConstants.SAML20P_NS));
              criteriaSet.add(new EntityIdCriterion(configuration.getIdentityProviderIdentifier()));
              try {
                  val engine = buildSignatureTrustEngine(configuration);
                  LOGGER.debug("Validating signature via trust engine for [{}]", configuration.getIdentityProviderIdentifier());
                  return engine.validate(signature, criteriaSet);
              } catch (final SecurityException e) {
                  LOGGER.warn(e.getMessage(), e);
              }
          } catch (final SignatureException e) {
              LOGGER.error("Failed to validate assertion signature", e);
          }
  
          SamlUtils.logSamlObject(this.configBean, assertion);
  
          LOGGER.error("Signature doesn't match any signing credential and cannot be validated.");
          return false;
      }