Cannot omit package qualifier when specifying class and method for AT/AFTER CALL trigger location

When using the AT/AFTER CALL location specifier to specify a method call as the trigger location it shoud be possible to identify the required method using ust the method name, the class and method name or the fully package qualified class an method name i.e.

AT CALL foo()
AT CALL MyFoo.foo()
AT CALL org.acme.com.MyFoo.foo()

The 2nd of these options is not currently working.