Companies GraphQL IDL schema

schema.graphqls

schema {
    query: QueryType
    mutation: MutationType
}

type QueryType {
    company( name: ID!) : Company
    companies : [ Company ]
}

type MutationType {
    company( name: ID! revenue: Int!): Company
    companyDelete( name: ID! ): Boolean
}

type Company {
    name: ID!
    revenue: Int!
}