static byte[] getBytesFromStringLiteral(String literal)
    {
        return getBytes(literal.substring(1, literal.length() - 1));
    }
Creates the error/warning message that we need to show users/IDEs when ANTLR has found a parsing error, has
recovered from it and is now telling us that a parsing exception occurred.

@param tokenNames
           token names as known by ANTLR (which we ignore)
@param e
           The exception that was thrown
protostuff-parser/src/main/java/io/protostuff/parser/AbstractParser.java