See: Description
| Interface | Description | 
|---|---|
| TimeSource | A source of wall time. | 
| TimeSourceService | Service that offers a  TimeSourceto other services needing one. | 
| Class | Description | 
|---|---|
| SystemTimeSource | The standard  TimeSourcethat usesSystem.currentTimeMillis() | 
| TickingTimeSource | A  TimeSourcethat increases the time in background using a timer. |