Methods
getPresentationSeconds() → {number}
    Get the presentation time in seconds.
Returns:
- Type
- number
getWallSeconds() → {number}
    Get the time wall time in seconds.
Returns:
- Type
- number
shouldBeMakingProgress() → {boolean}
    Check if the presentation time should be changing. This will return |true|
when we expect the presentation time to change.
Returns:
- Type
- boolean