code: def line_break(self):
          
          for i in range(self.slide.insert_line_break):
              # needs to be inside text:p
              if not self._in_tag(ns("text", "p")):
                  # we can just add a text:p and no line-break
                  # Create paragraph style first
                  self.add_node(ns("text", "p"))
              self.add_node(ns("text", "line-break"))
              self.pop_node()
              if self.cur_node.tag == ns("text", "p"):
                  return
  
              if self.cur_node.getparent().tag != ns("text", "p"):
                  self.pop_node()
          self.slide.insert_line_break = 0
docs: insert as many line breaks as the insert_line_break variable says