Revert "Comment added to clone() method"

This reverts commit 7fdcade88daf5f0e1067c25c1d5e966cc5490e26.
Revert "Revert "Comment added to clone() method""

This reverts commit a4b98a451dd05661e2a9954745d71e3be3a522fa.
Merge branch 'master' of https://github.com/mastergku/IntelligentSystem