the special attributes
    and methods: <code>__getinitargs__</code>, <code>__getstate__</code>,
    <code>__setstate__</code>, <code>__getstate_manages_dict__</code>,
    <code>__safe_for_unpickling__</code>, <code>__reduce__</code></dt>

    <dt><b>Returns:</b> <code>*this</code></dt>

    <dt><b>Rationale:</b> Provides an <a href="pickle.html">easy to use
    high-level interface</a> for establishing complete pickle support for the
    wrapped class. The user is protected by compile-time consistency
    