UML22 — ptc-03-09-15/Non-navigable ends with no role names nor multiplicities

Issue: It appears that associations with neither end names nor
multiplicities on non-navigable ends are used in parts of the UML Core that
are defined via CMOF. See, for example, section 9.9, figure 35, p. 62, for
example. I understand that for elements defined via EMOF, this signifies a
simple property. But is it appropriate for elements defined with CMOF.

Recommendation: Either correct this by adding multiplicities and end names
or explain in the specification why it is alright to omit them in these
cases

The meaning of this convention should be explained in the document.