skewXSelf property
Implementation
_i3.DOMMatrix Function([_i2.num?]) get skewXSelf =>
    ([_i2.num? p0]) => _i4.callMethod(
          _i4.getProperty(
            this,
            'skewXSelf',
          ),
          r'call',
          [
            this,
            p0 ?? _i6.undefined,
          ],
        );