def parse(node)
      node.xpath('*').each do |node_child|
        begin
          node_child.xpath('w:drawing')
        rescue Nokogiri::XML::XPath::SyntaxError # This mean it is Chart
          case node_child.name
          when 'Choice'
            @office2010_content = ChartStyle.new(parent: self).parse(node_child)
          when 'Fallback'
            @office2007_content = ChartStyle.new(parent: self).parse(node_child)
          end
          next
        end
        case node_child.name
        when 'Choice'
          @office2010_content = DocxDrawing.new(parent: self).parse(node_child.xpath('w:drawing').first) unless node_child.xpath('w:drawing').first.nil?
          @choice = Choice.new(parent: self).parse(node_child)
        when 'Fallback'
          @office2007_content = OldDocxPicture.new(parent: self).parse(node_child.xpath('w:pict').first) unless node_child.xpath('w:pict').first.nil?
        end
      end
      self
    end
def parse(node)
      node.xpath('*').each do |node_child|
        begin
          node_child.xpath('w:drawing')
        rescue Nokogiri::XML::XPath::SyntaxError # This mean it is Chart
          case node_child.name
          when 'Choice'
            @office2010_content = ChartStyle.new(parent: self).parse(node_child)
          when 'Fallback'
            @office2007_content = ChartStyle.new(parent: self).parse(node_child)
          end
          next
        end
        case node_child.name
        when 'Choice'
          @office2010_content = DocxDrawing.new(parent: self).parse(node_child.xpath('w:drawing').first) unless node_child.xpath('w:drawing').first.nil?
          @choice = Choice.new(parent: self).parse(node_child)
        when 'Fallback'
          @office2007_content = OldDocxPicture.new(parent: self).parse(node_child.xpath('w:pict').first) unless node_child.xpath('w:pict').first.nil?
        end
      end
      self
    end
Parse AlternateContent
 @param [Nokogiri::XML:Node] node with Relationships
 @return [AlternateContent] result of parsing