I would like to know if activate is supported when I use
SVGImage.activate();

<svg width="100" height="100">

<rect x = "10" y ="10" width="20" height="20">

<animate begin="go.activate" dur="5s" attributeName="width" attributeType="XML" form="0" to="50"/>

</rect>

<rect x = "50" y ="50" width="20" height="20" id="go"/>

</svg>