Is XlFileFormat 57 still valid to save an Excel worksheet as PDF?

I want to Saveas an Excel worksheet as PDF format. I used XlFileFormat 57 before and it works well. But now it doesn't work and I found that it doesn't exist in the official web page https://docs.microsoft.com/en-us/office/vba/api/excel.xlfileformat . Anyone knows is it still valid or not ? Thanks