UML14 — issue: Missing association names

Summary: Severity: Minor
Issue: missing association names

Most of the associations are missing names, which are useful for model
interchange.
Here is the convention being considered in XMI for providing those names.
1) Identify the names of the classes on each end.
2) The "first" class is the one with the name that is lexigraphically first.
3) Concatenate the two class names together, separated by an underscore (_)
character. First_Second.
4) Duplicates have a number appended, starting with 2.

An example association name is Method_Operation (and not Operation_Method).

Clarified in UML 1.3 physical model.