get lastChild() {
        return this.children.length > 0
            ? this.children[this.children.length - 1]
            : null;
    }
/** Last child of the node. */
Last child of the node.
Last child of the node .
get lastChild() {
        return this.children.length > 0
            ? this.children[this.children.length - 1]
            : null;
    }
get lastChild ( ) { return this . children . length > 0 ? this . children [ this . children . length - 1 ] : null ; }
Last child of the node.
Last child of the node .