toDotHtml function
Implementation
String toDotHtml(VizRoot root, {List<String> ignorePackages = const []}) {
final dot = toDot(root, escapeLabels: true, ignorePackages: ignorePackages);
return _dotHtmlTemplate
.replaceAll(_dotPlaceHolder, dot)
.replaceAll(_titlePlaceHolder, root.root.name);
}