stat abstract method
Calls the operating system's stat() function on the path of this
FileSystemEntity. Identical to FileStat.stat(this.path)
.
Returns a `Future<FileStat>`
object containing the data returned by
stat().
If the call fails, completes the future with a FileStat object with .type set to FileSystemEntityType.NOT_FOUND and the other fields invalid.
Implementation
Future<FileStat> stat();