code: public static <T> Mono<Boolean> sequenceEqual(Publisher<? extends T> source1,
  			Publisher<? extends T> source2,
  			BiPredicate<? super T, ? super T> isEqual, int prefetch) {
  		return onAssembly(new MonoSequenceEqual<>(source1, source2, isEqual, prefetch));
  	}
docs: Returns a Mono that emits a Boolean value that indicates whether two Publisher sequences are the
  same by comparing the items emitted by each Publisher pairwise based on the results of a specified
  equality function.
  <p>
  <img class="marble" src="doc-files/marbles/sequenceEqual.svg" alt="">
  
  @param source1 the first Publisher to compare
  @param source2 the second Publisher to compare
  @param isEqual a function used to compare items emitted by each Publisher
  @param prefetch the number of items to prefetch from the first and second source Publisher
  @param <T> the type of items emitted by each Publisher
  @return a Mono that emits a Boolean value that indicates whether the two Publisher two sequences
  are the same according to the specified function