static <T extends Response> RetryRuleWithContentBuilder<T> builder(
            BiPredicate<? super ClientRequestContext, ? super RequestHeaders> requestHeadersFilter) {
        requireNonNull(requestHeadersFilter, "requestHeadersFilter");
        return new RetryRuleWithContentBuilder<>(requestHeadersFilter);
    }
Returns a newly created {@link RetryRuleWithContentBuilder} with the specified
{@code requestHeadersFilter}.
core/src/main/java/com/linecorp/armeria/client/retry/RetryRuleWithContent.java