return this.joinRemoveCategory(false, this.getCategoryCode());
}
private String joinRemoveCategory(boolean isJoin, String categoryCode) {
try {
Category category = this.getCategory(categoryCode);
if (category == null) return SUCCESS;
List<String> categories = this.getCategoryCodes();
if (isJoin) {
if (!categories.contains(categoryCode)) {
categories.add(categoryCode);