def get(remotefile, localfile = File.basename(remotefile),
            blocksize = DEFAULT_BLOCKSIZE, &block) # :yield: data
      if @binary
        getbinaryfile(remotefile, localfile, blocksize, &block)
      else
        gettextfile(remotefile, localfile, &block)
      end
    end
Retrieves +remotefile+ in whatever mode the session is set (text or
binary).  See #gettextfile and #getbinaryfile.