def parse(node)
      node.attributes.each do |key, value|
        case key
        when 'abstractNumId'
          @id = value.value.to_f
        end
      end

      node.xpath('*').each do |numbering_child_node|
        case numbering_child_node.name
        when 'multiLevelType'
          @multilevel_type = MultilevelType.new(parent: self).parse(numbering_child_node)
        when 'lvl'
          @level_list << NumberingLevel.new(parent: self).parse(numbering_child_node)
        end
      end
      self
    end
def parse(node)
      node.attributes.each do |key, value|
        case key
        when 'abstractNumId'
          @id = value.value.to_f
        end
      end

      node.xpath('*').each do |numbering_child_node|
        case numbering_child_node.name
        when 'multiLevelType'
          @multilevel_type = MultilevelType.new(parent: self).parse(numbering_child_node)
        when 'lvl'
          @level_list << NumberingLevel.new(parent: self).parse(numbering_child_node)
        end
      end
      self
    end
Parse Abstract Numbering data
 @param [Nokogiri::XML:Element] node with Abstract Numbering data
 @return [AbstractNumbering] value of Abstract Numbering data