Build schema using GraphQL IDL.

idl-schema.graphqls

schema {
    query: QueryType
}

type QueryType {
    # (id: Long) allows for these fields to be filtered by id
    animals(id: Long): [Animal]
    keepers(id : Long) : [Keeper]
}

type Keeper {
    # ! <= required
    id: Long!
    name: String!
    animals: [Animal]
}

type Animal {
    id: Long!
    name: String!
    type: String!
    birthdate: String!
}