XML SVG - persist the end state of an animation - svg

Question

After the end of an AnimateTransform action, the element snaps back to the original value.
This isn't exactly unexpected as it's in the SMIL documentation:
As with all animation elements, this only manipulates the presentation value, and when the animation completes, the effect is no longer applied
But it is unwanted. I'd like to find a way to persist the changes using XML animations
Here's an example in SVG
<svg width="200" height="200" viewBox="0 0 100 100"
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink">
<rect id="outline" stroke="black" fill="white"
width="100" height="100" >
<animateTransform id="one"
attributeType="XML"
attributeName="transform"
type="translate"
from="0" to="-7"
dur="1s" repeatCount="1" />
</rect>
</svg>
One idea I had was to call a set action with dur="indefinite" that was triggered by the end of the first animation with begin="one.end", but can't quite seem to get the syntax right. I haven't found any documentation that show how to call set for a transformed value.
<svg width="200" height="200" viewBox="0 0 100 100"
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink">
<rect id="outline" stroke="black" fill="white"
width="100" height="100" >
<animateTransform id="one"
attributeType="XML"
attributeName="transform"
type="translate"
from="0" to="-7"
dur="1s" repeatCount="1" />
<!-- Doesn't work -->
<set attributeType="XML"
attributeName="transform"
type="translate"
to="-7" begin="one.end" />
<!-- Does work (as POC) -->
<set attributeType="css"
attributeName="fill"
to="green" begin="one.end" />
</rect>
</svg>
This question on persisting the end state of the animation shows how to do this with css transforms by using -webkit-animation-fill-mode: forwards;, but that obviously won't have any affect on an svg animation

Answer 1

fill="freeze" will persist the state of an animation e.g.
<svg width="200" height="200" viewBox="0 0 100 100"
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink">
<rect id="outline" stroke="black" fill="white"
width="100" height="100" >
<animateTransform id="one"
attributeType="XML"
attributeName="transform"
type="translate"
from="0" to="-7"
dur="1s" repeatCount="1"
fill="freeze"/>
</rect>
</svg>