code: @Beta
    protected int standardCount(@Nullable Object object) {
      for (Entry<?> entry : this.entrySet()) {
        if (Objects.equal(entry.getElement(), object)) {
          return entry.getCount();
        }
      }
      return 0;
    }
docs: A sensible, albeit inefficient, definition of {@link #count} in terms of {@link #entrySet}. If
  you override {@link #entrySet}, you may wish to override {@link #count} to forward to this
  implementation.
  
  @since 7.0