It would be very beneficial to get a new API endpoint for statistics purposes.

Listing the categories and their installations count would be great for showing the admin user how big of a target group a push message could be send to.

*https://SERVER:PORT/CONTEXT/rest/metrics/categories/application/id/*

[

  {

    "category": "banana",

    "count: 27

  },

  {

    "category": "apple",

    "count: 51

  }

]