copy abstract method Null safety

Future<File> copy(
  1. String newPath

Copies this file.

If newPath is a relative path, it is resolved against the current working directory (Directory.current).

Returns a Future<File> that completes with a File for the copied file.

If newPath identifies an existing file, that file is removed first. If newPath identifies an existing directory, the operation fails and the future completes with an exception.


Future<File> copy(String newPath);