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<!DOCTYPE html>
<script>
document.addEventListener('DOMContentLoaded', async () => {
const svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg')
const filter = document.createElementNS('http://www.w3.org/2000/svg', 'filter')
filter.setAttribute('id', 'id_0')
svg.appendChild(filter)
document.documentElement.appendChild(svg)
const doc = new Document()
const canvas = document.createElement('canvas')
const context = canvas.getContext('2d')
context.filter = 'url(#id_0)'
doc.adoptNode(document.documentElement)
SpecialPowers.gc()
setTimeout('self.close()', 2000)
})
</script>
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