Affects 2.0.0-alpha-3. ```graphql query($id: ID!) { test(id: $id) { id } } ``` This [should be a valid GraphQL document](http://facebook.github.io/graphql/June2018/#OperationDefinition), but generates the error `<definition> expected, got 'query'`. graphql-js parses this just fine. It [looks fine in the antlr definition of graphql-java](https://github.com/graphql-java/graphql-java/blob/master/src/main/antlr/GraphqlOperation.g4#L6), but maybe it's a bug there anyway.