how to query EmbeddedDocumentListField in the GraphQL

[ahmad88me]

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• What is the current behavior?
  EmbeddedDocumentListField can't be queried and I couldn't find anything in the documentation.
  I get the following error "Cannot query field \"candidateToolPairs\" on type \"Column\".",

Code gist is available: https://gist.github.com/ahmad88me/d489b8aa87e71d24e28606e5b502ab28

class Column(MongoengineObjectType):
    class Meta:
        model = ColumnModel
        interfaces = (Node,)

with the model class Column include candidate_tool_pairs = EmbeddedDocumentListField(ToolCandidatePair)

In the graphQL interface, all the field of the class Column loads successfully, but the field candidate_tool_pairs (I tried candidateToolPairs as well. Also nothing starts with candidate is suggested by the autocomplete).

Instead, I get the following error: "Cannot query field \"candidateToolPairs\" on type \"Column\".",

• What is the expected behavior?
  To get the list candidateToolPairs

• Please tell us about your environment:

Flask-GraphQL==2.0.1
graphene==2.1.8
graphene-mongo==0.2.13
graphql-core==2.3.2
graphql-relay==2.0.1
graphql-server-core==1.2.0
mongoengine==0.19.1
pymongo==3.11.0```


* **Other information** (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow)