function dispose(first) {
        var rest = [];
        for (var _i = 1; _i < arguments.length; _i++) {
            rest[_i - 1] = arguments[_i];
        }
        if (Array.isArray(first)) {
            first.forEach(function (d) { return d && d.dispose(); });
            return [];
        }
        else if (rest.length === 0) {
            if (first) {
                first.dispose();
                return first;
            }
            return undefined;
        }
        else {
            dispose(first);
            dispose(rest);
            return [];
        }
    }
A resolved keybinding. Can be a simple keybinding or a chord keybinding.