How do embeded documents without `id`?

i've spend a week already to find some solution for this.

i have next mongo models:

```
class Inner(EmbeddedDocument):
meta = {
'strict': False,
}
foo = fields.StringField()
bar = fields.StringField()

class Outer(Document):
meta = {
"collection": "outer",
"auto_create_index": False,
'strict': False,
}

fizz = fields.StringField(unique=True)
inner = fields.EmbeddedDocumentField(Inner, default=None)
```

Graphene nodes:
```
class InnerGraph(MongoengineObjectType):
class Meta:
model = Inner
interfaces = (relay.Node,)

class OuterGraph(MongoengineObjectType):
class Meta:
model = Outer
interfaces = (relay.Node,)
```

And graphene query
```
class Query(ObjectType):
patient_list = MongoengineConnectionField(OuterGraph)

# some resolver - removing it change nothing
```

Outer entity working fine, as expected, no problems.

But inner entity has `id` field (which is not exists in first place)
~And no other fields~ fixed.

Output in docs. Query -> Outer (edges, node) -> inner (type: InnerGraph)
```
InnerGraph
Fields
id ID!
The ID of the object.
Implements
Node
An object with an ID (edited)
```

Any ideas, how to make this combination work?