sting sample by plugging
in the per-draw parameter estimates for the computations in
the generated quantities block.
See the Stan User’s Guide section
<a href="https://mc-stan.org/docs/stan-users-guide/posterior-prediction.html#stand-alone-generated-quantities-and-ongoing-prediction">Stand-alone generated quantities and ongoing prediction</a>
for further details.</p>
<p>To illustrate how this works we use the <code>generate_quantities</code> method
to do posterior predictive checks using the estimate of <