code: public final DocWorkUnit findWorkUnitForClass(final Class<?> c) {
          for (final DocWorkUnit workUnit : this.workUnits)
              if (workUnit.getClazz().equals(c))
                  return workUnit;
          return null;
      }
docs: Helper function that finding the DocWorkUnit associated with class from among all of the work units
  
  @param c the class we are looking for
  @return the DocWorkUnit whose .clazz.equals(c), or null if none could be found