OCLOperators subSequence
From MDrivenWiki
Returns a smaller collection from a start to stop.
subSequence(<start>, <stop>)
Please note that the index number is 1-based.
Example;
Sequence{1..20}->subSequence(10,15)
The expression above will return numbers 10, 11, 12, 13, 14 and 15.
If you supply index values outside the source collection, the result collection will be empty.