public UserAttributeParam createUserAttributeParam() {
        UserAttributeParam attributeParam = new UserAttributeParam();
        attributeParam.setKey(key);

        Set<String> valueList = Sets.newHashSet();

        if (!StringUtils.isBlank(this.values)) {
          String[] values = this.values.split(LINE_BREAK);
          for (String val : values) {
            if (!StringUtils.isBlank(val.trim())) {
              valueList.add(val.trim());
            }
          }
        }
        attributeParam.setValues(valueList);

        return attributeParam;
      }