code: def send(self, msg):
      if self.is_active:
          self.sidecar_process.send(msg)
  
file_path: metaflow/metaflow/sidecar/sidecar.py
imports: from .sidecar_subprocess import SidecarSubProcess
label_desc: Use image node_id 3 for calling the Sidecar obj's underlying member method code with example usage: obj.send(msg) without return types