extend type Query {
    posts(name: String!, tag: String! = "", paging: PageInput): Connection!
}
extend type Subscription {
    """after == 0 start from begining, after == -1 start from end"""
    postAdded(name: String!, tag: String! = "", after: Int! = -1): PostEvent
}
type PostEvent implements Edge @goModel(model: "go.sour.is/ev/app/msgbus.PostEvent") {
    id: ID!

    payload: String!
    payloadJSON: Map!
    tags: [String!]!

    meta: Meta!
}