Multi Columns Variables

In this example the number of columns is manually(2 columns) defined, I have a case where the pages of the pdf file vary from 1 to 5 columns, how can I detect this? Could you please give me an example with this code?

The issue does not name a file or test; start from the repository's referenced two-column example and trace how its column count is supplied. Define completion as an example that handles PDFs whose pages have 1–5 columns and demonstrates how the column count is detected.

Written by the indexing model from the issue text.