template<typename RealType, int ElementSize> bool AverageOverlay ( const [TDynamicMeshOverlay](API\Runtime\GeometryCore\DynamicMesh\TDynamicMeshOverlay)< RealType, ElementSize > * Overlay, [TArray](API\Runtime\Core\Containers\TArray)< RealType > & VertexValues, [TArray](API\Runtime\Core\Containers\TArray)< bool > & HasElements )