UIBarButtonItem appearance in swift 4 and swift 5

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Solution:

 Swift 4:
        UIBarButtonItem.appearance().setBackButtonTitlePositionAdjustment(UIOffsetMake(-200, -5), for: .default)


swift 5:

        UIBarButtonItem.appearance().setBackButtonTitlePositionAdjustment(UIOffset(horizontal: -200, vertical: -5), for: .default)

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