Facet
Detail for specified facet
`facet_id`: "topics", "facility", "format", "genre", or "rights".
GET /api/0.2/facet/language/?format=api
https://ddr.densho.org/language/?format=api", "json": "https://ddr.densho.org/api/0.2/facet/language/?format=api", "children": "https://ddr.densho.org/api/0.2/facet/language/children/?format=api" }, "title": "Language" }{ "id": "language", "model": "ddrfacet", "links": { "html": "