public static String escapeSymbolsForGString(CharSequence s, boolean isSingleLine, boolean unescapeSymbols) {
    StringBuilder b = new StringBuilder();
    escapeSymbolsForGString(s, isSingleLine, unescapeSymbols, b);
    return b.toString();
  }
public static String escapeSymbolsForGString(CharSequence s, boolean isSingleLine, boolean unescapeSymbols)