void ConvertNumComponentsToOffsets(const vtkm::cont::UnknownArrayHandle &numComponentsArray, vtkm::cont::ArrayHandle< vtkm::Id > &offsetsArray, vtkm::Id &componentsArraySize, vtkm::cont::DeviceAdapterId device=vtkm::cont::DeviceAdapterTagAny{})
ConvertNumComponentsToOffsets takes an array of Vec sizes (i.e.