Method insert

packages/designer/src/document/node/node.ts:1125–1127

(node: INode, ref?: INode, useMutator = true)

  }

  insert(node: INode, ref?: INode, useMutator = true) {
    this.insertAfter(node, ref, useMutator);
  }

  insertBefore(node: INode, ref?: INode, useMutator = true) {
    const nodeInstance = ensureNode(node, this.document);