anchor.diff:      input: MyCollectionCreateArtworkInput!
     ): MyCollectionCreateArtworkPayload
   
  +  # Deletes an artwork from my collection
  +  myCollectionDeleteArtwork(
  +    input: MyCollectionDeleteArtworkInput!
  +  ): MyCollectionDeleteArtworkPayload
  +
     # Update an artwork in my collection
     myCollectionUpdateArtwork(
       input: MyCollectionUpdateArtworkInput!
  
positive.code:   ): UpdateViewingRoomSubsectionsPayload
  }
  
  # A connection to a list of items.
  type MyCollectionConnection {
    default: Boolean!
  
negative.code: }
  
  type MyCollectionCreateArtworkPayload {
    artworkOrError: MyCollectionArtworkMutationType
    clientMutationId: String
  }
  
  input MyCollectionDeleteArtworkInput {
    artworkId: String!
    clientMutationId: String
  }
  
  type MyCollectionDeleteArtworkPayload {
    artworkOrError: MyCollectionArtworkMutationType
    clientMutationId: String
  }
  
  