Is the data loader's per-key context allowed to be null? #76
Description
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:
TypeRuntimeWiring.newTypeWiring("Query")
.dataFetcher(
"myField",
environment -> {
String myId = environment.getArgument("myId");
// it's OK if this is null, because the keyContext is allowed to be null?
Integer myKeyContext = getNullableKeyContext(...);
return environment.getDataLoader("myLoader").load(myId, myKeyContext);
})
.build();
Can 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.