f the
correct type. An example of a concrete implementation to hold a user-defined
derived type is provided below.</p>
<div class="codehilite"><pre><span class="k">module </span><span class="n">example_container_mod</span>

  <span class="k">use </span><span class="n">abstract_container_mod</span>
  <span class="k">implicit none</span>
<span class="k">  private</span>

<span class="k">  type </span><span class="n">example</span>
    <span class="kt">integer</span><span class="p">,</span> <span class="k">pub