class_docstr: Utility renderer using Matplotlib to render a grid of plots over the same (x, y) range.
  
  Args:
      nrows (int, optional): Number of rows of plots, default ``1``.
      ncols (int, optional): Number of columns of plots, default ``1``.
      figsize (tuple(float, float), optional): Figure size in inches, default ``(9, 9)``.
      show_frame (bool, optional): Whether to show frame and axes ticks, default ``True``.
      backend (str, optional): Matplotlib backend to use or ``None`` for default backend.
          Default ``None``.
      gridspec_kw (dict, optional): Gridspec keyword arguments to pass to ``plt.subplots``,
          default None.
docstr: Set the title of a single Axes.
  
  Args:
      title (str): Title text.
      ax (int or Matplotlib Axes, optional): Which Axes to set the title of, default ``0``.
      color (str, optional): Color to set title. May be a string color or the letter ``"C"``
          followed by an integer in the range ``"C0"`` to ``"C9"`` to use a color from the
          ``tab10`` colormap. Default is ``None`` which uses Matplotlib's default title color
          that depends on the stylesheet in use.
code: def title(
      self, title: str, ax: Axes | int = 0, color: str | None = None
  ) -> None:
      """Set the title of a single Axes.
  
      Args:
          title (str): Title text.
          ax (int or Matplotlib Axes, optional): Which Axes to set the title of, default ``0``.
          color (str, optional): Color to set title. May be a string color or the letter ``"C"``
              followed by an integer in the range ``"C0"`` to ``"C9"`` to use a color from the
              ``tab10`` colormap. Default is ``None`` which uses Matplotlib's default title color
              that depends on the stylesheet in use.
      """
      if color:
          self._get_ax(ax).set_title(title, color=color)
      else:
          self._get_ax(ax).set_title(title)
  
imports: from __future__ import annotations
  from collections.abc import Sequence
  import io
  from typing import TYPE_CHECKING, Any, cast
  import matplotlib.collections
  import matplotlib.pyplot
  import numpy
  from contourpy import FillType, LineType
  from contourpy.convert import convert_filled, convert_lines
  from contourpy.enum_util import as_fill_type, as_line_type
  from contourpy.util.mpl_util import filled_to_mpl_paths, lines_to_mpl_paths
  from contourpy.util.renderer import Renderer
label_desc: Use image node_id 12 for calling the MplRenderer obj's underlying member method code with example usage: obj.title(title, ax, color) without return types