identity hash based this
WebInput instance.null if not
provided.null until WebOutput.transform(Consumer) is used to add such headers.URL query parameters.null if not provided.WebInput used for the execution.GraphQL to use.RouterFunctions.GraphQL.GraphQL instance to use.GraphQlSource.GraphQlTester instance.GraphQlTester.EntitySpec with options available to assert data converted to
a List of entities.spring-websocket.