github.com/99designs/gqlgen@v0.17.45/codegen/testserver/singlefile/useptr.graphql (about)

     1  type A {
     2      id: ID!
     3  }
     4  
     5  type B {
     6      id: ID!
     7  }
     8  
     9  union TestUnion = A | B
    10  
    11  extend type Query {
    12      optionalUnion: TestUnion
    13  }