[MongoDB]: Unable to retrieve `id` property value for inner nodes

[srieeni]

Hi Team,

Thank you so much for this wonderful library and maintaining it with good documentation.

I am following github mongodb-hotchocolate examples and able to spinup a graphql server and its working well serving required data with projections.

One issue that we are seeing is, it returns null value for id field on inner nodes.

Example:

{
"id": "Root123",
"field1" : "value",
"address": {
"id": "123"
"city":"Boston"
}
}

query T {
orders {
id
address {
id
city
}
}

Above query is returning us below output:

{
"orders": {

   "id": "Root123",
   "address": {
      "id": null                        ========> this id field is cocming as NULL
      "city":"Boston"
    }
}

}

Is this default behavior for hotcolate-mongodb resolvers? How can we override this behavior and fix this issue?

Thank you.