anchor.diff:  
   This is where the {@link io.vertx.ext.web.handler.graphql.VertxDataFetcher} can help:
   
  -[source,java]
  +[source,$lang]
   ----
   {@link examples.GraphQLExamples#vertxDataFetcher}
   ----
  
positive.code: 
  Eventually, configure the {@link io.vertx.ext.web.handler.graphql.GraphQLHandler} to create a `DataLoaderRegistry` for each request:
  
  [source,java]
  ----
  {@link examples.GraphQLExamples#dataLoaderRegistry}
  ----
  
negative.code: 
  You may retrieve this object by inspecting the `DataFetchingEnvironment`:
  
  [source,$lang]
  ----
  {@link examples.GraphQLExamples#routingContextInDataFetchingEnvironment}
  ----
  