getFile method
      
void
getFile([ 
    
- String? path,
- FileSystemFlags options,
- FileSystemEntryCallback successCallback,
- ErrorCallback errorCallback,
The FileSystemDirectoryEntry interface's method
getFile() returns a
FileSystemFileEntry object corresponding to a file contained somewhere
within the directory subtree rooted at the directory on which it's called.
Implementation
external void getFile([
  String? path,
  FileSystemFlags options,
  FileSystemEntryCallback successCallback,
  ErrorCallback errorCallback,
]);