public boolean isConditional(final HttpRequest request) {
        return hasSupportedEtagValidator(request) || hasSupportedLastModifiedValidator(request);
    }
Is this request the type of conditional request we support?
@param request The current httpRequest being made
@return {@code true} if the request is supported
httpclient5-cache/src/main/java/org/apache/hc/client5/http/impl/cache/CachedResponseSuitabilityChecker.java