code: @NotNull
      public static String unescapeChars(@NotNull final String string, final char[] toUnescape) {
          String toReturn = string;
          for (char character : toUnescape) {
              toReturn = unescapeChar(toReturn, character);
          }
          return toReturn;
      }
docs: Unscape all the occurrences of the <toUnescape> characters from the <string>
  
  @param string     the string from which to unescape the characters
  @param toUnescape the characters to unescape as Array
  @return a new string with the unescaped <toUnescape> characters