Merge "Make the system action API more clear with documentation" into rvc-dev...
Merge "Make the system action API more clear with documentation" into rvc-dev am: 3987ae1a am: 6d7de732 am: 030251a7 am: 0176318a am: 2804986d
Change-Id: Iacf76e1bb57d48d353f89492429f4ab5126a3e23