title: Can I use multiMap to consume two items in a stream
body: <p>I want to implement a function such like:</p>
  <pre><code>Stream&lt;Long&gt; stream;
  stream.forEach(id-&gt;{
      Object obj = loadObj(id);
      doSomething(id, obj);
  });
  </code></pre>
  <p>Can I implement it using method references such as when <code>doSomething</code> only requires one parameter</p>
  <pre><code>Stream&lt;Long&gt; stream;
  stream.map(this::loadObj).forEach(this::doSomething)
  </code></pre>