return immutableEntry(element, count);
              }
            }
            return endOfData();
          }
        };
      }

      @Override
      int distinctElements() {
        return Iterators.size(entryIterator());
      }
    };
  }

  /**
   * Returns {@code true} if {@code subMultiset.count(o) <= superMultiset.count(o)} for all {@code
   * o}.
   *