title: Xamarin Essentials FileSystem can you save async
body: <p>Looking into Xamarin essentials and wondering what the purpose of FileSystem is.</p>
  
  <p>I was looking for something that would load and save a file for me async out of the box.</p>
  
  <p>It looks to me and may be I am not understanding the usage that the only thing that it gives you is a location where to save and load the file and there is no functionality to actually save it for you  eg "Old PCLStorage"</p>
  
  <p>is this correct?</p>