Facet: Type of heading

As a librarian
I want to be able to limit my authority results by type of heading
So that I can find the results I am want

Requirement

• On the Search & Filter pane, display an accordion titled [Type of heading]
• Accordion default = collapsed
• When accordion is expanded then show a multi-select (see screenshot 1)
• When user clicks on multi select show type of heading values returned and hit counts (see screenshot 2)
  • User should be able to select one or multiple
  • Each selection updates the search and search results
  • Each selection should be sent to the backend as OR'd
  • Hit count should be surrounded by parentheses and number separator used must honor selected locale.

Screenshot 1

Screenshot 2

Mockups - https://drive.google.com/drive/folders/10rO1B48TZSLgR3z_E_u8SgBLWI7D_DRx