def expected_count

      if h.ccount.nil?
        count_list_size
      elsif h.ccount >= 0
        [ h.ccount, count_list_size ].min
      else # all but 1, 2, ...
        i = count_list_size + h.ccount
        i < 1 ? 1 : i
      end
    end
def expected_count

      if h.ccount.nil?
        count_list_size
      elsif h.ccount >= 0
        [ h.ccount, count_list_size ].min
      else # all but 1, 2, ...
        i = count_list_size + h.ccount
        i < 1 ? 1 : i
      end
    end
How many branch replies are expected before the concurrence is over ?