def inspect
      result = "#{self.class}["
      each_with_index { |obj, i| result << ', ' if i > 0; result << obj.inspect }
      return result << "]"
    end
def inspect
      result = "#{self.class}["
      each_with_index { |obj, i| result << ', ' if i > 0; result << obj.inspect }
      return result << "]"
    end
Convert this collection to a programmer-readable `String` representation.