A document that provides clarification of ambiguous
field descriptors in updateDescription.
When the update change event describes changes on a field where
the path contains a period (.) or where the path includes
a non-array numeric subfield, the disambiguatedPath field
provides a document with an array that
lists each entry in the path to the modified field.
Requires that you set the :ref:`showExpandedEvents
<change-streams-expanded-events>` option to true.
.. versionadded:: 6.1