add method
Implementation
AppRichTextSpan add(AppRichTextSpan textSpan) {
var list = _children ?? [];
list.add(textSpan);
return this.._children = list;
}
AppRichTextSpan add(AppRichTextSpan textSpan) {
var list = _children ?? [];
list.add(textSpan);
return this.._children = list;
}