reset() {
    this.resetNodes();
    this.resetEdges();
    this._touchLastUpdate();
  }
/**
   * Clean up everything in the graph.
   */
Clean up everything in the graph.
Clean up everything in the graph .
reset() {
    this.resetNodes();
    this.resetEdges();
    this._touchLastUpdate();
  }
reset ( ) { this . resetNodes ( ) ; this . resetEdges ( ) ; this . _touchLastUpdate ( ) ; }
Clean up everything in the graph.
Clean up everything in the graph .