code: private Long getLongPropertyOverrideValue(String name, String key) {
          if (properties != null) {
              String propertyName = getPropertyName(name, key);
  
              String propertyOverrideValue = properties.getProperty(propertyName);
  
              if (propertyOverrideValue != null) {
                  try {
                      return Long.parseLong(propertyOverrideValue);
                  }
                  catch (NumberFormatException e) {
                      logger.error("Could not parse property override key={}, value={}",
                              key, propertyOverrideValue);
                  }
              }
          }
          return null;
      }
docs: Get an {@link Long} property override value.
  @param name the {@link CircuitBreaker} name.
  @param key the property override key.
  @return the property override value, or null if it is not found.