code: public static CircuitBreakerExports ofCircuitBreaker(String prefix, CircuitBreaker circuitBreaker) {
          requireNonNull(prefix);
          requireNonNull(circuitBreaker);
          return new CircuitBreakerExports(prefix, Array.of(circuitBreaker));
      }
docs: Creates a new instance of {@link CircuitBreakerExports} with default metrics names prefix and
  a circuit breaker as a source.
  
  @param prefix the prefix of metrics names
  @param circuitBreaker the circuit breaker