Determines whether the duration of the transition is reported in a fixed duration in seconds or as a normalized time.
If hasFixedDuration is true, the transition duration is in seconds.
If hasFixedDuration is false, the transition duration is in normalized time.
Note: In normalized time, a duration of 1 makes the transition the same length as the state that triggered it. A value of 2, for instance, would make the transition twice as long as the state that triggered it.