Deprecated: batchSize parameter is deprecated, use .buffer() instead to control the backpressure
Transforms the given reactive Publisher into Flow.
Use buffer operator on the resulting flow to specify the size of the backpressure.
More precisely, it specifies the value of the subscription’s request.
1 is used by default.
If any of the resulting flow transformations fails, subscription is immediately cancelled and all in-flights elements are discarded.
This function is integrated with
see its documentation for additional details.