code: public static MediaFile get(final BandwidthClient client, final String id) throws Exception {
      	
          final String mediaUri = client.getUserResourceInstanceUri(BandwidthConstants.MEDIA_URI_PATH, id);
  
          final JSONObject jsonObject = toJSONObject(client.get(mediaUri, null));
          return new MediaFile(client, jsonObject);
      }
docs: Gets information about a previously sent or received MediaFile.
  @param client the client.
  @param id MediaFile id
  @return information about MediaFile
  @throws IOException unexpected error.