public SvgElementCssSelectorMatcher(SvgElement element) => _element = element ?? throw new ArgumentNullException(nameof(element));
internal SvgLength(string value, SvgElement element, SvgLengthDirection direction) : this(value, new SvgLengthElementContext(element, direction)) { }
public SvgLengthElementContext(SvgElement element, SvgLengthDirection dir) { _element = element ?? throw new ArgumentNullException(nameof(element)); _dir = dir; }