description

# copy method Null safety

Future<File> copy (

1. String newPath

)

Copy this file. Returns a `Future<File>` that completes with a File instance for the copied file.

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

## Implementation

    Future<File> copy(String newPath);