Sample gql schema

gistfile1.txt

  type Planet {
    name: String!
    classification: String!
    population: Int
  }

  type System {
    name: String!
    planets: [Planet!]
  }

  type Galaxy {
    name: String!
    systems: [System!]
  }

  type Query {
    galaxy(id: ID): Galaxy
    andromeda: Galaxy
    hello: String
  }