code: def get_rows(self, request, context):
          
          from staff_toolbar.loading import load_toolbar_item
          rows = []
          for i, hook in enumerate(self.children):
              # Allow dotted paths in groups too, loads on demand (get import errors otherwise).
              if isinstance(hook, (basestring, tuple, list)):
                  hook = load_toolbar_item(hook)
                  self.children[i] = hook
  
              html = hook(request, context)
              if not html:
                  continue
  
              rows.append(html)
          return rows
docs: Get all rows as HTML