code: public CircuitBreakerBean findCircuitBreakerBean(String name) {
          CircuitBreaker circuitBreaker = findCircuitBreaker(name);
  
          if (circuitBreaker instanceof CircuitBreakerBean) {
              return (CircuitBreakerBean) circuitBreaker;
          }
          return null;
      }
docs: Find an existing {@link CircuitBreakerBean}
  @param name the value for the {@link CircuitBreakerBean}
  @return the found {@link CircuitBreakerBean}, or null if it is not found.