class_docstr: Abstract base class for renderers, defining the interface that they must implement.
code: def _grid_as_2d(
      self, x: ArrayLike, y: ArrayLike
  ) -> tuple[CoordinateArray, CoordinateArray]:
      x = np.asarray(x)
      y = np.asarray(y)
      if x.ndim == 1:
          x, y = np.meshgrid(x, y)
      return x, y
  
      x = np.asarray(x)
      y = np.asarray(y)
      if x.ndim == 1:
          x, y = np.meshgrid(x, y)
      return x, y
  
file_path: catboost/contrib/python/contourpy/contourpy/util/renderer.py
imports: from __future__ import annotations
  from abc import ABC, abstractmethod
  from typing import TYPE_CHECKING, Any
  import numpy
label_desc: Use image node_id 1 for calling the Renderer obj's underlying member method code with example usage: obj._grid_as_2d(x, y) and returns: x,  y, x,  y