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