How to use the hint.Level.Info function in hint

hintUpdated: function() {
        var hints = cliController.get("hints");
        var hintEle = this.getPath("contentView.display.hint.layer");
        while (hintEle.firstChild) {
            hintEle.removeChild(hintEle.firstChild);
        }

        var level = Level.Info;
        this.set("_completion", "");

        /**
         * Find a way to populate a DOM node with this hint
         */
        var addHint = function(hintNode, hint) {
            if (!hint) {
                return;
            }

            // Defer promises
            if (typeof hint.then == "function") {
                hint.then(function(hint) {
                    addHint(hintNode, hint);
                }.bind(this));
                return;

});

            this.link(content, "completed", function(completed) {
                SC.$("#" + throbId).css({
                    "display": completed ? "none" : "block"
                });
            });
        }
    }
});

var hintClass = {};
hintClass[Level.Error] = "cmd_error";
hintClass[Level.Incomplete] = "cmd_incom";
hintClass[Level.Warning] = "cmd_warn";
hintClass[Level.Info] = "cmd_info";

/**
 * A view designed to dock in the bottom of the editor, holding the command
 * line input.
 * <p>
 * TODO: We need to generalize the way views attach to the editor, but now isn't
 * the right time to work on this. We're locked to the bottom.
 */
exports.CliInputView = SC.View.design({
    dock: dock.DOCK_BOTTOM,
    classNames: [ "cmd_line" ],
    layout: { height: 300, bottom: 0, left: 0, right: 0 },
    childViews: [ "contentView" ],
    hasFocus: false,
    table: null,
    _contentHeight: -1,</p>