René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Is the data loader's per-key context allowed to be null?","articleBody":"Based on looking at the code and testing it, it _appears_ that this data fetcher will pass through the key context to the data loader, _even if it's null_:\r\n\r\n```\r\n    TypeRuntimeWiring.newTypeWiring(\"Query\")\r\n        .dataFetcher(\r\n            \"myField\",\r\n            environment -\u003e {\r\n              String myId = environment.getArgument(\"myId\");\r\n              \r\n              // it's OK if this is null, because the keyContext is allowed to be null?\r\n              Integer myKeyContext = getNullableKeyContext(...);\r\n\r\n              return environment.getDataLoader(\"myLoader\").load(myId, myKeyContext);\r\n            })\r\n        .build();\r\n```\r\n\r\nCan you confirm, that though? Because nothing I found in the Javadocs or https://www.graphql-java.com/documentation/v16/batching#passing-context-to-your-data-loader says whether the per-key context is allowed to be `null`.","author":{"url":"https://github.com/skingsland","@type":"Person","name":"skingsland"},"datePublished":"2021-01-15T18:19:37.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/76/java-dataloader/issues/76"}