dev/tools/gen_defaults/data/bottom_app_bar.json

{
  "version": "4_0_0",

  "md.comp.bottom-app-bar.container.color": "surfaceContainer",
  "md.comp.bottom-app-bar.container.elevation": "md.sys.elevation.level2",
  "md.comp.bottom-app-bar.container.height": 80.0,
  "md.comp.bottom-app-bar.container.shape": "md.sys.shape.corner.none"
}