code: function (value) {
                  if (this._intersectionThreshold === value) {
                      return;
                  }
                  this._intersectionThreshold = value;
                  if (this.geometry) {
                      this.geometry.boundingBias = new BABYLON.Vector2(0, value);
                  }
              }
docs: The intersection Threshold is the margin applied when intersection a segment of the LinesMesh with a Ray.
  This margin is expressed in world space coordinates, so its value may vary.
  @param value the new threshold to apply