/**
 * Definition of a parameter, including name, class, description, default value and the validator.
 *
 * @param <T> The type of the parameter value
 */
public class Param<T> {
    public final String name;
    public final Class<?> clazz;
    public final String description;
    public final Object defaultValue;
    public final ParamValidator validator;

    public Param(String name, Class<?> clazz, String description, Object defaultValue, ParamValidator validator) {...}

    // Encodes the given object into a json-formatted string
    public String jsonEncode(TObject value) throws IOException {...}

    // Decodes the json-formatted string into an object of the given type.
    public T jsonDecode(String json) throws IOException {...}
}