Extending relay-connection

[sylfabre]

Q	A
Bug report?	yes
Version/Branch	0.11.1

The following definitions leads to an error

# TotalCountConnection.types.yaml

TotalCountConnection:
    type: relay-connection
    config:
        connectionFields:
            totalCount:
                type: Int!
                description: "Number of items in this collection"

# TestConnection.types.yaml
TestConnection:
    type: TotalCountConnection
    config:
        nodeType: String

The error is
Unrecognized option "_TotalCountConnection_config" under "overblog_graphql_types.TestConnection"

I'm trying to make a default connection type with the totalCount field to use whenever I need a connection with this field

[mcg-web]

Can you provide a full example of how you extends the connection meta type please?