3>private pure function propagator_construct_vacuum() result(this)  
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        <p>Construct a vacuum propagator, i.e. a propagator which satisfies G=0.</p>

  <h4>Arguments</h4>
    <em>None</em>
    <h4>
    Return Value
    <small>type(<a href='../type/propagator.html'>propagator</a>)</small>
    </h4>
    <p>Constructed object</p>

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  </div>

            <div class="card">
    <div class="card-header codesum"><span class="anchor" id="proc-propagator_constru