Improve Tag.toString().

     */

    @Override

    public String toString() {

        StringBuilder sb = new StringBuilder("TAG ")

            .append("uid = ")

            .append(mId)

            .append(" Tech [");

        for (int i : mTechList) {

            sb.append(i)

            .append(", ");

        StringBuilder sb = new StringBuilder("TAG: Tech [");

        String[] techList = getTechList();

        int length = techList.length;

        for (int i = 0; i < length; i++) {

            sb.append(techList[i]);

            if (i < length - 1) {

                sb.append(", ");

            }

        }

        sb.append("]");

        return sb.toString();

    }