/**
* <b>DOM</b>: Implements {@link
* org.w3c.dom.svg.SVGFEConvolveMatrixElement#getPreserveAlpha()}.
*/
public SVGAnimatedBoolean getPreserveAlpha() {
SVGAnimatedBoolean result;
if (preserveAlphaReference == null ||
(result = (SVGAnimatedBoolean)preserveAlphaReference.get()) ==
null) {
result = new SVGOMAnimatedBoolean(this, null, ATTR_PRESERVE_ALPHA);
preserveAlphaReference = new WeakReference(result);