I'm using AEM 6.5.8
and what I want is to do something like below
<select
        jcr:primaryType="nt:unstructured"
        sling:resourceType="granite/ui/components/coral/foundation/form/select"
        fieldLabel="select"
        name="./select">
    <items jcr:primaryType="nt:unstructured">
        <option1
                jcr:primaryType="nt:unstructured"
                selected="{Boolean}true"
                text="option1"
                value="option1"/>
        <option2
                jcr:primaryType="nt:unstructured"
                text="option2"
                value="option2"/>
    </items>
    <datasource
            jcr:primaryType="nt:unstructured"
            sling:resourceType="/test/run/url"/>
</link>