Test for issue #4990
Make sure that a use is only added once in ClassGenerator
This commit ensures that if someone adds a use twice it is only added once to the file.
Merge branch 'hotfix/4981'

Close #4981
Merge pull request #4990 from Danez/patch-2

[Zend-Code] Make sure that a use is only added once in ClassGenerator
Merge branch 'hotfix/4990' into develop

Forward port #4990