code: public final <E> Mono<E> collect(Supplier<E> containerSupplier, BiConsumer<E, ? super T> collector) {
  		return Mono.onAssembly(new MonoCollect<>(this, containerSupplier, collector));
  	}
docs: Collect all elements emitted by this {@link Flux} into a user-defined container,
  by applying a collector {@link BiConsumer} taking the container and each element.
  The collected result will be emitted when this sequence completes.
  
  <p>
  <img class="marble" src="doc-files/marbles/collect.svg" alt="">
  
  @param <E> the container type
  @param containerSupplier the supplier of the container instance for each Subscriber
  @param collector a consumer of both the container instance and the value being currently collected
  
  @reactor.discard This operator discards the buffer upon cancellation or error triggered by a data signal.
  
  @return a {@link Mono} of the collected container on complete