Builder

constructor(operation: Operation<D>, requestUuid: Uuid)

Construct a new Builder that doesn't contain data, errors nor exception

While possible, this case is probably symptomatic of a buggy GraphQL implementation that returned no data while not setting any error

constructor(operation: Operation<D>, requestUuid: Uuid, data: D?)

Use 2 params constructor instead

Builder(operation = operation, requestUuid = requestUuid).data(data = data)