code: public static SignatureValidationFilter buildSignatureValidationFilter(final ResourceLoader resourceLoader,
                                                                             final String signatureResourceLocation) {
          try {
              val resource = resourceLoader.getResource(signatureResourceLocation);
              return buildSignatureValidationFilter(resource);
          } catch (final Exception e) {
              LOGGER.debug(e.getMessage(), e);
          }
          return null;
      }
docs: Build signature validation filter if needed.
  
  @param resourceLoader            the resource loader
  @param signatureResourceLocation the signature resource location
  @return the metadata filter