def parse(node)
      node.xpath('*').each do |node_child|
        case node_child.name
        when 'rPr'
          @properties = RunProperties.new(parent: self).parse(node_child)
        when 't'
          @t = Text.new(parent: self).parse(node_child)
          @text = t.text
        when 'tab'
          @tab = Tab.new(parent: self).parse(node_child)
        end
      end
      self
    end
def parse(node)
      node.xpath('*').each do |node_child|
        case node_child.name
        when 'rPr'
          @properties = RunProperties.new(parent: self).parse(node_child)
        when 't'
          @t = Text.new(parent: self).parse(node_child)
          @text = t.text
        when 'tab'
          @tab = Tab.new(parent: self).parse(node_child)
        end
      end
      self
    end
Parse ParagraphRun object
 @param node [Nokogiri::XML:Element] node to parse
 @return [ParagraphRun] result of parsing