docs: def next_style(self):
          """
          Sibling CT_Style element identified by the value of `w:name/@w:val`
          or |None| if no value is present or no style with that style id
          is found.
          """
          next = self.next
          if next is None:
              return None
          styles = self.getparent()
          return styles.get_by_id(next.val)