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