There is no "end" to a segment.
There are only animations contained in a segment. Animations can do gazillion of things depending on your setup.
Be creative, and think : )
Create your animations, configure them as you want the segment to behave. Then in a specific animation, transition/blend into a specific animation called whatever you want, like "EndSegment", set it's duration and trigger a fade out, then transition to another animation.
Timeline offers endless possibilities... just think outside of the box.