code: def __repr__(self) -> str:
      return f"LineKey(key={self.key!r})"
  
file_path: wandb/wandb/apis/reports/_helpers.py
imports: from typing import Optional
  from ..public import PanelMetricsHelper, Run
  from .runset import Runset
  from .util import Attr, Base, Panel, nested_get, nested_set
label_desc: Use image node_id 3 for calling the LineKey obj's underlying member method code with example usage: obj.__repr__() and returns: str, self, str