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.

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)