Merge "MacAddress: add @NonNull annotations" am: 7d767a4710
am: a7c125e5b2

Change-Id: Icaa08c082797c6dbc3382e0662e24e1c84114175
tree: 553b139f8f3db0fdd1e9232e54038134f7997de1
  1. core/
  2. services/
  3. tests/