**Limitations**
- Absolute paths must start with the top element (data node) as per the model tree.
- Each list reference must include a valid instance reference to the key for that list. Except when it is the last element.
- - The Absolute path to list with integer key will not work. It needs to be surrounded with a single quote ([@code='1'])
- as if it is a string. This will be fixed in `CPS-961 <https://jira.onap.org/browse/CPS-961>`_
descendant-path
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