code: private static <T> ConfigOption<T> prefixOption(ConfigOption<T> option, String prefix) {
  		String key = prefix + option.key();
  
  		List<FallbackKey> deprecatedKeys;
  		if (option.hasFallbackKeys()) {
  			deprecatedKeys = new ArrayList<>();
  			for (FallbackKey dk : option.fallbackKeys()) {
  				deprecatedKeys.add(createDeprecatedKey(prefix + dk.getKey()));
  			}
  		} else {
  			deprecatedKeys = Collections.emptyList();
  		}
  
  		FallbackKey[] deprecated = deprecatedKeys.toArray(new FallbackKey[0]);
  		return new ConfigOption<>(key,
  			option.description(),
  			option.defaultValue(),
  			deprecated);
  	}
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