docs: def Next(self):
          """Advance to the next item in a repeated section.
  
      Raises:
        StopIteration if there are no more elements
      """
          stacktop = self.stack[-1]
          
          # Now we're iterating -- push a new mutable object onto the stack
          if stacktop.index == -1:
              stacktop = _Frame(None, index=0)
              self.stack.append(stacktop)
          
          context_array = self.stack[-2].context
          
          if stacktop.index == len(context_array):
              self.stack.pop()
              raise StopIteration
          
          stacktop.context = context_array[stacktop.index]
          stacktop.index += 1
          
          return True