| static IoMulti.OutputStreamMultiBuilder | IoMulti. builderOutputStream() | Deprecated, for removal: This API element is subject to removal in a future version.
 | 
| IoMulti.OutputStreamMultiBuilder | IoMulti.OutputStreamMultiBuilder. onRequest(BiConsumer<Long,Long> requestCallback) | Callback executed when request signal from downstream arrive. | 
| static IoMulti.OutputStreamMultiBuilder | IoMulti. outputStreamMultiBuilder() |  | 
| IoMulti.OutputStreamMultiBuilder | IoMulti.OutputStreamMultiBuilder. timeout(long timeout,
       TimeUnit unit) | Set max timeout for which is allowed to block write methods,
 in case there is no demand from downstream. |