Further specifies what kind of action led to generating this change.
The action is set in relation to the document state before any change. It means that, for example, if an element was renamed and
then removed (during the same module:engine/model/batch~Batch batch), the action will be set to 'remove', because when
compared to the document state before changes, the element was removed, and it does not matter that it was also renamed at one point.
Map of attributes that were set on the item while it was removed.
The length of a removed text node. For elements, it is always 1, as each removed element is counted as a one.
The name of the removed element or '$text' for a text node.
The position where the node was removed.
The type of diff item.
A single diff item for removed nodes.