selectedNodes() {
  let selectedNodes = [];
  
  if (this.d_value && this.options) {
      let keys = { ...this.d_value };
      
      performance.mark('findSelectedNodesStart');
  
      this.findSelectedNodes(null, keys, selectedNodes);
  
      performance.mark('findSelectedNodesEnd');
  
      const perfResult = performance.measure('findSelectedNodesDuration', 'findSelectedNodesStart', 'findSelectedNodesEnd');
  
      console.log(`findSelectedNodes duration: ${perfResult.duration}`);
  }
  
  return selectedNodes;
        }

nodeMap() {
    const nodeMap = {};

    performance.mark('nodeMapStart');

    this.options?.forEach(node => this.fillNodeMap(node, nodeMap))

    performance.mark('nodeMapEnd');

    const perfResult = performance.measure('nodeMapDuration', 'nodeMapStart', 'nodeMapEnd');

    console.log(`nodeMap duration: ${perfResult.duration}`);

    return nodeMap;
},