SYSML17 — Property path notation

SysML spec says:

The name of the referenced property is built by a string of names separated by “.”, resulting in a form of path name that identifies the property in its local context.

The problem is that in real-life models properties/parts are unnamed. In this case, it is not clear how property path should look like, or looks like this:
name1…..value or vehicle….value where intermediate properties are unidentifiable.

A proposed solution would be to use type name if part name is not specified.