code: def accept(self, visitor: "SignalsVisitor") -> None:
      ...
  
file_path: neptune-client/src/neptune/internal/signals_processing/signals.py
imports: from abc import abstractmethod
  from dataclasses import dataclass
label_desc: Use image node_id 1 for calling the Signal obj's underlying member method code with example usage: obj.accept(visitor) without return types