def xpath_row_containing(texts)
      texts = [texts] if texts.class == String
      conditions = texts.collect do |text|
        "contains(., #{xpath_sanitize(text)})"
      end.join(' and ')
      return ".//tr[#{conditions}]"
    end
def xpath_row_containing(texts)
      texts = [texts] if texts.class == String
      conditions = texts.collect do |text|
        "contains(., #{xpath_sanitize(text)})"
      end.join(' and ')
      return ".//tr[#{conditions}]"
    end
Return an XPath for any table row containing all strings in `texts`,
 within the current context.