basic_tree.kt

sealed class HtmlNode {
    class Tag(val tag: String): HtmlNode() {
        private val children: List<HtmlNode> = mutableListOf()
    
        // wordy implementations copy-pasted from compose
        fun insert(index: Int, instance: HtmlNode) 
        fun move(from: Int, to: Int, count: Int)
        fun remove(index: Int, count: Int)
    }
  
    class Text() : HtmlNode() {
        var text: String? = null
    }
}