private State newHalfOpenState() {
        return new State(CircuitState.HALF_OPEN, config.trialRequestInterval(), NoOpCounter.INSTANCE);
    }
Creates a new {@link NonBlockingCircuitBreaker} with the specified {@link Ticker} and
{@link CircuitBreakerConfig}.
core/src/main/java/com/linecorp/armeria/client/circuitbreaker/NonBlockingCircuitBreaker.java