What is the Swift 2 equivalent to the Swift 3 "String contains" function? -

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i want ask equivalent in swift 2 of swift 3 string contains function? because contains function won't work in xcode 7. 

func gettingsongname(){     let folderurl = nsurl(fileurlwithpath: nsbundle.mainbundle().resourcepath!)                 {             let songpath = try nsfilemanager.defaultmanager().contentsofdirectoryaturl(folderurl, includingpropertiesforkeys: nil, options: .skipshiddenfiles)             song in songpath {                 var mysong = song.absolutestring                 if mysong.contains(".mp3")                  }             }





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