code: def add_space(self, line):
          
          if not isinstance(self.last_item, Space):
              space = Space(self._structure)
              self._structure.append(space)
          self.last_item.add_line(line)
          return self
docs: Add a Space object to the section
  
          Used during initial parsing mainly
  
          Args:
              line (str): one line that defines the space, maybe whitespaces