Since revision 637 'Collection's method 'makeArray' returns 'allItems'
instead of 'allIndexes' by default.
Because of that the 'makeArray' method in 'OrderedCollection' is
not needed anymore and could be removed.
[If it should remain then I would suggest to optimize the code now that
'allItems' has to be implemented to "return self~allItems" (removing the
"~supplier" section from the current implementation.]
However, it is not explicitly defined that 'MapCollection's 'makeArray'
would return 'allIndexes', hence I would suggest to add a default
implementation of 'makeArray' to the 'MapCollection' class:
::method 'makeArray' /* return index array */ return self~allIndexes
[An alternative would be to let 'Collection's default implementaiton of
the 'makeArray' method return 'allIndexes' and leave everything else
(I could take over this item.)