Постоянная SVG_EDGEMODE_UNKNOWN
Реализация
static const int SVG_EDGEMODE_UNKNOWN = 0;
© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-svg/FEConvolveMatrixElement/SVG_EDGEMODE_UNKNOWN-constant.html
