Merge "Add a small usage comment" am: a898f0a039 am: 7f40360e32 am: 5274a841f1 am: a29760aa9b am: dfe07270bd

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1844182

Change-Id: Ib6a0f9962db5a173cc0e62ea33e96109617fc681