def get_preview(path)
      resp, body = content_request('/files/get_preview', path: path)
      return FileMetadata.new(resp), body
    end
def get_preview(path)
      resp, body = content_request('/files/get_preview', path: path)
      return FileMetadata.new(resp), body
    end
Get a preview for a file.

 @param [String] path
 @return [Dropbox::FileMetadata] metadata
 @return [HTTP::Response::Body] body