span><span class="n">backward_euler_domain</span><span class="p">(</span><span class="n">initial</span><span class="p">,&amp;</span>
  <span class="n">tendency</span><span class="p">,</span><span class="n">dt</span><span class="p">)</span> <span class="k">result</span><span class="p">(</span><span class="n">domain</span><span class="p">)</span>
  <span class="c">!! Integrates a domain instance forward in time using a 1st order implicit </span>
  <span class="c">!! backward Euler integration scheme.</span>
 