def parse(node)
      node.attributes.each do |key, value|
        case key
        when 's'
          @style_index = value.value.to_i
        when 't'
          @type = value.value.to_s
        end
      end
      node.xpath('*').each do |node_child|
        case node_child.name
        when 'f'
          @formula = Formula.new(parent: self).parse(node_child)
        when 'v'
          @value = TextValue.new(parent: self).parse(node_child)
        end
      end
      parse_text_data
      self
    end
def parse(node)
      node.attributes.each do |key, value|
        case key
        when 's'
          @style_index = value.value.to_i
        when 't'
          @type = value.value.to_s
        end
      end
      node.xpath('*').each do |node_child|
        case node_child.name
        when 'f'
          @formula = Formula.new(parent: self).parse(node_child)
        when 'v'
          @value = TextValue.new(parent: self).parse(node_child)
        end
      end
      parse_text_data
      self
    end
Parse XlsxCell object
 @param node [Nokogiri::XML:Element] node to parse
 @return [XlsxCell] result of parsing