animation Duration Ms
The length of the animation performed by OverviewViewportState when it starts updating the camera and anytime OverviewViewportState.options is set.
When set to a custom value, transitions will use fixed-duration linear animations that take exactly the specified duration regardless of distance. This provides predictable timing but may result in very fast camera movement for large distances. Consider using longer durations or keeping the default value if animating over large geographic areas.
See also
for details.
Defaults to DEFAULT_STATE_ANIMATION_DURATION_MS milliseconds