using subsetting parameters or according class methods.</p>
<p>HDF5 files which have been created or opened through <code>H5File$new()</code> need
to be closed afterwards using <code>$close_all()</code>. <code>$close_all()</code> not only closes the file itself,
but also all objects that are still open inside it (such as groups or datasets). <code>$flush()</code> can be used
to flush unwritten data to an HDF5 file.</p>
<p>HDF5 Files typically contain the following objects:</p><dl><dt>Groups</dt>
<dd><p>Simi