Convertir XLSX en XLTX

// For complete examples and data files, please go to https://github.com/aspose-cells-cloud/aspose-cells-cloud-java/
    import java.io.File;
    import com.aspose.cloud.cells.api.*;
    public class Conversion {
        public static void main(String[] args) {
            String name =  "Book1.xlsx";
            String format = "xltx";
            String password = null;
            String outPath = null;
            String destFile = "DestFile.xltx";
            try {
                CellsApi cellsApi = new CellsApi(System.getenv("ProductClientId"), System.getenv("ProductClientSecret"));
                File response = cellsApi.cellsWorkbookPutConvertWorkbook(new File(name), format, password, outPath, null,null);            
                if(response.canRead())
                {
                    if(response.exists()){
                        response.renameTo(new File(destFile));
                    }                
                }
            }
            catch(Exception exception )
            {
                System.out.print(exception);
            }
        }
    }