String javaClassContent = "int a = 1";
        Java8Lexer java8Lexer = new Java8Lexer(CharStreams.fromString(javaClassContent));
        CommonTokenStream tokens = new CommonTokenStream(java8Lexer);
        Java8Parser parser = new Java8Parser(tokens);
        ParseTree tree = parser.compilationUnit();

        ParseTreeWalker walker = new ParseTreeWalker();
        PythonLoader listener= new PythonLoader();

        walker.walk(listener, tree);

        for(String s : listener.kod){
            System.out.println(s);
        }