code: def get_anchor_point(self, anchor_name):
          
  
          if anchor_name in self._possible_anchors:
              return TikZNodeAnchor(self.handle, anchor_name)
          else:
              try:
                  anchor = int(anchor_name.split('_')[1])
              except:
                  anchor = None
  
              if anchor is not None:
                  return TikZNodeAnchor(self.handle, str(anchor))
  
          raise ValueError('Invalid anchor name: "{}"'.format(anchor_name))
docs: Return an anchor point of the node, if it exists.