message: Fixes a warning -- extraneous typename in type alias
diff: @@ -899,8 +899,8 @@ public:
  using SurfaceMesh = typename MeshWrapper::SurfaceMesh;
  - using VertexIndex = typename axom::IndexType;
  - using TriangleIndex = typename axom::IndexType;
  + using VertexIndex = axom::IndexType;
  + using TriangleIndex = axom::IndexType;
  using IndexRegistry = slam::FieldRegistry<VertexIndex>;
  using SpaceTriangle = typename MeshWrapper::SpaceTriangle;
  