String innerHtml

Source 

String get innerHtml {
  final container = new DivElement();
  final SvgElement cloned = this.clone(true);
  container.children.addAll(cloned.children);
  return container.innerHtml;
}
void innerHtml=(String value)

Parses the HTML fragment and sets it as the contents of this element.

This uses the default sanitization behavior to sanitize the HTML fragment, use setInnerHtml to override the default behavior.

Source 

set innerHtml(String value) {
  this.setInnerHtml(value);
}