path - Source definition
The path defines the source for a view member or extent. This might be an OSI function or an OSI expression. In order to define an OSI function, it has to be enclosed in parenthesis { ... }.
For requesting a specific order for a multiple indexed collection, the index name (key name) may be appended at the end of a property path or expression separated by ':'. Keynames are supported for property paths, only, but not for expressions.
Person.children:sk_FirstName
Type: SET<STRING>