code: public static String disentangleBiMap(final BiMap<Character, Character> rules,
  		final String obfuscated)
  	{
  		return obfuscateBiMap(rules.inverse(), obfuscated);
  	}
docs: Disentangle the given obfuscated text with the given {@link BiMap} rules
  
  @param rules
  the rules
  @param obfuscated
  the obfuscated text
  @return the string