Change record status: 
Project: 
Introduced in branch: 
8.0.x
Description: 

In #2506213: Update content entity changed timestamp on UI save we extended the EntityChangedInterface with the function setChangedTime and implemented it in the EntityChangedTrait.

All the entities in core which are implementing the interface now use the function from the trait and their own implementations have been removed.

From now on all contrib entites which are implementing the EntityChangedInterface and also using the EntityChangedTrait have to remove the setChangedTime implementation from the entity, if it was defined.

Entities implementing the EntityChangedInterface but not using the EntityChangedTrait have to implement their own setChangedTime function.

Impacts: 
Module developers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Other updates done