https://medium.com/@uladzislau.komar/swift-viewcontroller-data-transferring-%D0%BF%D0%B5%D1%80%D0%B5%D0%B4%D0%B0%D1%87%D0%B0-%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85-%D0%B2-swift-%D0%BC%D0%B5%D0%B6%D0%B4%D1%83-%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%BE%D0%BB%D0%BB%D0%B5%D1%80%D0%B0%D0%BC%D0%B8-d1b0d060d5bb