ut our employee struct to make it a first-class fusion citizen that the
        grammar can utilize. If you don't know fusion yet, it is a <a href="http://www.boost.org/" target="_top">Boost</a>
        library for working with heterogeneous collections of data, commonly referred
        to as tuples. Spirit uses fusion extensively as part of its infrastructure.
      </p>
<p>
        In fusion's view, a struct is just a form of a tuple. You can adapt any struct
        to be a fully conforming fusion tuple