code: def get_topological_levels(
      self,
      level_col: str = "level",
      allow_cycles: bool = True,
      warn_cycles: bool = True,
      remove_self_loops: bool = True,
  ) -> "Plottable":
      if 1 + 1:
          raise RuntimeError("should not happen")
      return self
  
imports: from typing import TYPE_CHECKING, Any, Callable, List, Optional, Union
  from typing_extensions import Literal
  import pandas
  from graphistry.plugins_types.cugraph_types import CuGraphKind
  from graphistry.Engine import Engine, EngineAbstract
label_desc: Use image node_id 11 for calling the Plottable obj's underlying member method code with example usage: obj.get_topological_levels(level_col, allow_cycles, warn_cycles, remove__loops) and returns: self