Get Collection By Slug

curl -X GET \
   'https://www.wixapis.com/stores/v1/collections/slug/coffee-products' \
   -H 'Authorization: <AUTH>'

{
  "collection": {
    "id": "32fd0b3a-2d38-2235-7754-78a3f819274a",
    "name": "Coffee Products",
    "slug": "coffee-products",
    "visible": true,
    "description": "Some Coffee Products",
    "media": {
      "mainMedia": {
        "thumbnail": {
          "url": "https://static.wixstatic.com/media/11062b_5ccf31f886ec449f84a18ecdf58e05ec~mv2.jpg/v1/fit/w_50,h_50,q_90/file.jpg",
          "width": 50,
          "height": 50
        },
        "mediaType": "image",
        "title": "",
        "image": {
          "url": "https://static.wixstatic.com/media/11062b_5ccf31f886ec449f84a18ecdf58e05ec~mv2.jpg/v1/fit/w_6630,h_5304,q_90/file.jpg",
          "width": 6630,
          "height": 5304
        },
        "id": ""
      },
      "items": [
        {
          "thumbnail": {
            "url": "https://static.wixstatic.com/media/11062b_5ccf31f886ec449f84a18ecdf58e05ec~mv2.jpg/v1/fit/w_50,h_50,q_90/file.jpg",
            "width": 50,
            "height": 50
          },
          "mediaType": "image",
          "title": "",
          "image": {
            "url": "https://static.wixstatic.com/media/11062b_5ccf31f886ec449f84a18ecdf58e05ec~mv2.jpg/v1/fit/w_6630,h_5304,q_90/file.jpg",
            "width": 6630,
            "height": 5304
          },
          "id": ""
        }
      ]
    },
    "numberOfProducts": 5
  }
}