code: public static String escapeForJava( char ch )
    {
      String escape = escapeForGosuStringLiteral( ch );
      if( escape == null )
      {
        if( ch <= 31 || ch >= 127 )
        {
          escape = getUnicodeEscape( ch );
        }
      }
      return escape;
    }
docs: Converts an escaped character code into a string literal expressing it, e.g. '\n' becomes "\\n".
  
  @param ch Escaped character code.
  
  @return The string expression of the character code, null if <code>ch</code> is not an escaped character.
  Supports Unicode.