class_docstr: Base class for transports.
class_docstr_tok: ["Base","class","for","transports","."]
docstr: Get optional transport information.
docstr_tok: ["Get","optional","transport","information","."]
code: def get_extra_info(self, name, default=None):
      """Get optional transport information."""
      return self._extra.get(name, default)
  
label_desc: Use image node_id 2 for calling the BaseTransport obj's underlying member method code with example usage: obj.get_extra_info(name, default) and returns: self