private static String[] classNames(Class... input) {
        String[] names = new String[input.length];
        for (int i = 0; i < input.length; i++) {
            names[i] = input[i].getName();
        }
        return names;
    }
Create a symbol table

@param input input
@since 2.0.58
core/src/main/java/com/alibaba/fastjson2/SymbolTable.java