Sometimes it can be helpful to close a section in the WordPress Customizer, for example, after a button was clicked. If you know how to do it, it is really easy to do, but I searched for a while recently until finding the solution.
With this one-liner you can close a section:
wp.customize.section('hannover_portfolio_archive_page_options').collapse();
Code language: JavaScript (javascript)
hannover_portfolio_archive_page_options
is the ID of the section you want to close.