code: public static <T> Collector<T, ?, BloomFilter<T>> toBloomFilter(
        Funnel<? super T> funnel, long expectedInsertions) {
      return toBloomFilter(funnel, expectedInsertions, 0.03);
    }
docs: Returns a {@code Collector} expecting the specified number of insertions, and yielding a {@link
  BloomFilter} with false positive probability 3%.
  
  <p>Note that if the {@code Collector} receives significantly more elements than specified, the
  resulting {@code BloomFilter} will suffer a sharp deterioration of its false positive
  probability.
  
  <p>The constructed {@code BloomFilter} will be serializable if the provided {@code Funnel<T>}
  is.
  
  <p>It is recommended that the funnel be implemented as a Java enum. This has the benefit of
  ensuring proper serialization and deserialization, which is important since {@link #equals}
  also relies on object identity of funnels.
  
  @param funnel the funnel of T's that the constructed {@code BloomFilter} will use
  @param expectedInsertions the number of expected insertions to the constructed {@code
  BloomFilter}; must be positive
  @return a {@code Collector} generating a {@code BloomFilter} of the received elements
  @since 23.0