https://data-apis.org/array-api/latest/API_specification/array_object.html#dlpack-self-stream-none

says that stream keyword argument in __dlpack__(self, /, *, stream=None) should be an integer or None.

However, in dmlc/dlpack#57 discussion (see dmlc/dlpack#57 (comment)) in the case of working with SYCL, the stream may need to be a class representing an in-order sycl queue.

Can we remove the requirements for stream to be an integer ?