The “set” command is not graphql in this case but GraphQL± and is executed in ratel. Creating these nodes in ratel I wanted to simulate an “existing” database, ie. one that has been created without knowing about graphql.
Then having this “existing database” I try to expose it es graphql, therefore following the docs I try to “attach” a grpahql schema via localhost:8080/admin/schema. As per the docs, this should work.