function _appendLabels(htLabels) {
            for(var sInstanceId in htLabels) {
                var waCategory, welCategory;
                var htLabel = htLabels[sInstanceId];

                waCategory = htElement.welLabelBoard
                    .children("[data-category=" + htLabel.category + "]");

                if (waCategory.length > 0) {
                    waCategory
                        .children(".label-list")
                        .append(_createLabel(sInstanceId, htLabel.name));
                } else {
                    __addCategory(htLabel.category)
                        .children(".label-list")
                        .append(_createLabel(sInstanceId, htLabel.name));
                }
            }
        }
Append the given tags on #tags div to show them.

@param {Object} htLabels