title: How to load multiple modules implementing the same behaviour
body: <p>I do not understand how is one supposed to use multiple modules that each implement the same behaviour since i get this error at compile time:</p>
  
  <blockquote>
    <p>Function is already imported from</p>
  </blockquote>
  
  <p>In my case i have two modules implementing <code>gen_event</code> behaviour and i am trying to import them in a third module.
  I get the error message whenever i am trying to compile this code:</p>
  
  <pre><code>-module(mgr).
  -import(h1,[init/1]).   // implements gen_event
  -import(h2,[init/1]).   // implements gen_event
  </code></pre>