Method _getTopUndoVersion

external/.scrollLibs.js:17606–17609

()

    return this._redoStack
  }
  _getTopUndoVersion() {
    const undoStack = this._getUndoStack()
    return undoStack[undoStack.length - 1]
  }
  async _reloadFromUndoTop() {
    this.setSubparticles(this._getTopUndoVersion())
  }