Simple data in a vaadin-combo-box

test-design.html

<link rel="import" href="bower_components/polymer/polymer.html">
<link rel="import" href="bower_components/vaadin-combo-box/src/vaadin-combo-box.html">

<dom-module id="test-design">
    <template>
        <vaadin-combo-box id="myCombo"></vaadin-combo-box>
    </template>

    <script>
        class TestDesign extends Polymer.Element {
            static get is() {
                return 'test-design';
            }

            connectedCallback() {
                super.connectedCallback();
                this.$.myCombo.items = ['Banana', 'Apple', 'Strawberry'];
            }

            static get properties() {
                return {
                };
            }
        }

        customElements.define(TestDesign.is, TestDesign);
    </script>
</dom-module>