message: Add documentation to getTraverser() function
diff: @@ -278,6 +278,15 @@ public:
  }
  }
  + /*!
  + * \brief Returns a device-copyable object that can be used to traverse the
  + * BVH from inside a device kernel.
  + *
  + * \return it the traverser object for the current BVH.
  + *
  + * \node The traverser object may only be used in the same execution space as
  + * the one that the BVH class was instantiated with.
  + */
  TraverserType getTraverser() const { return m_bvh->getTraverserImpl(); }
  /*!
  