A Container is a timeline element that controls other
TimelineElement-s, which are its children.
In particular, it is responsible for maintaining the relative start and
duration times of its children. Therefore, if a container is temporally
adjusted or moved to a new layer, it may accordingly adjust and move its children. Similarly, a change in one of its children may prompt
the parent to correspondingly change its siblings.
The span of the container's children's
priority values, which is the number of integers that lie between (
inclusive) the minimum and maximum priorities found amongst the container's children (maximum - minimum + 1).
Static methods:
publicstaticunownedContainer? group (List<Container>? containers)
Groups the containers into a single container by merging them.