code: def render_children(self, block, view_name=None, context=None):
          
          results = []
          for child_id in block.children:
              child = self.get_block(child_id)
              result = self.render_child(child, view_name, context)
              results.append(result)
          return results
docs: Render a block's children, returning a list of results.
  
          Each child of `block` will be rendered, just as :func:`render_child` does.
  
          Returns a list of values, each as provided by :func:`render`.