message: Make it easier to differentiate empty and non-empty tile boundaries.
diff: @@ -29,6 +29,7 @@ import {
  ElementAlignedBox3d,
  Frustum,
  FrustumPlanes,
  + LinePixels,
  TileProps,
  } from "@bentley/imodeljs-common";
  import { IModelApp } from "../IModelApp";
  @@ -324,7 +325,9 @@ export class Tile implements IDisposable, RenderMemory.Consumer {
  const ranges = computeChildRanges(this);
  for (const range of ranges) {
  const color = range.isEmpty ? ColorDef.blue : ColorDef.green;
  - builder.setSymbology(color, color, 1);
  + const pixels = !range.isEmpty ? LinePixels.HiddenLine : LinePixels.Solid;
  + const width = !range.isEmpty ? 2 : 1;
  + builder.setSymbology(color, color, width, pixels);
  addRangeGraphic(builder, range.range, this.root.is2d);
  }
  } else if (Tile.DebugBoundingBoxes.Sphere === type) {
  