function getForProjection(projection) {
  let tileGrid = projection.getDefaultTileGrid();
  if (!tileGrid) {
    tileGrid = createForProjection(projection);
    projection.setDefaultTileGrid(tileGrid);
  }
  return tileGrid;
}
@param {import("./proj/Projection.js").default} projection Projection.
@return {!TileGrid} Default tile grid for the
passed projection.