loopbackjs - Multi-level include filter with LoopBack JS -

My problem is how can I get multilevel connection structures in a request with the LoopBack backend I have 3 models Are: continent , country , county . I want to get a continent and get it in all countries and all the counties.

Relationships between the two:

• Continent contains many country , and
Therefore, / api / continent / 1

  {"id": 1 "name": "Europe"}  

Now, I want to receive all the countries and countries with the Continent , so do I do a query for / api / continent / 1? Filter [Include] = Country

However, I do not receive counties.

What kind of query should I make to get a list that includes both the relationship level? {ID: 1, Name: "United Kingdom", County: [/ b] {ID: 1, Name: "Avon":

Thank you for your help!

syntax is:

  / api / continent / 1? Filter = {"include": {"country": "counties"}}