typedef [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void(const [FStaticMeshLODResources](API\Runtime\Engine\FStaticMeshLODResources) &LODRenderData, int32 LODIndex, bool bSupportsManualVertexFetch, FVertexDeclarationElementList &Elements)> GetPSOVertexElementsFn