Remove back button from Appbar widget

In this video how to hide/remove back button from appbar widget by using automaticallyImplyLeading: false property. https://rrtutors.com/tutorials/flutter-remove-back-button-from-appbar-widget How to show backbutton in flutter https://rrtutors.com/tutorials/how-to-show-back-button-in-flutter How to create custom button in flutter https://rrtutors.com/tutorials/Flutter-Custom-Buttons-How-to-Create-Custom-Buttons-in-Flutter