ut they contain pointers to the pdf, the data and the parameters required to run the calculator. These pointers are managed outside by the users or by the  <tt>RooWorkspace</tt>. They can be passed either directly to the classes, for example  via the constructor, or by using the <tt>ModelConfig</tt> class. The <tt>ModelConfig</tt> class acts as an interface to the Workspace in order to load and store all the
needed information. 
</li>
</ul>


<h4>ProfileLikelihoodCalculator, LikelihoodInterval</h4>
<ul>
  <