- prepareAnnotationEntry(): Emit a warning in case the annotation has not been instantiated yet. The goal is to remove the code that instantiates the annotation on the fly in the long run.
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Ensure that IDs have been assigned to all new model elements before they are hooked to the project / resource
- Rationale
  - Model elements for which no ID has been assigned, have id 0 (which is the default value). 
  - When the new element is hooked to the resource, ResourceUtils.KernelResourceFactory.KernelXMIResource.getId() is called, which internally calls setId() to synchronize the XMI ID with the AF3 ID. In case the ID is still 0, this implicit call will corrupt the ID -> model object map (by override the mapping for key 0).
- Changes
  - ElementCompositorService: Assign IDs *before* hooking new element to the container (but of course using the container to determine the next free ID)
  - ModelElementCompositorBase: Assign IDs to newly instantiated annotations

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- This is expected to create the right bundle URIs when the code is executed from a deployed bundle (in an RCP)

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- Add a mechanism to create input dialogs: The action descriptor passes a map-type object that defines the expected parameters.
- Refine the container classes.
- Add an annotation action that allows to create random valued entries for a selected annotation build around an average value and the given bounds.
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- Move the annotation and annotationEntry fields from the ColumnHandle to the AnnotationInstSpec class.
- Add a container class to the IAnnotationValueProvider that allows to specify the menu entry string and the set of elements to apply the specified action to.
- Modify the IAnnotationValueProvider and DefaultAnnotationContextActions interfaces to use the new container class.
- Adjust the GenericAnnotationView to create runnables based on the information found in the new container class.
- Simplify the "Propagate to all" annotation action.
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