code: def _post_plot_logic(self, ax: Axes, data) -> None:
      if self.orientation == "horizontal":
          # error: Argument 1 to "set_xlabel" of "_AxesBase" has incompatible
          # type "Hashable"; expected "str"
          ax.set_xlabel(
              "Frequency" if self.xlabel is None else self.xlabel  # type: ignore[arg-type]
          )
          ax.set_ylabel(self.ylabel)  # type: ignore[arg-type]
      else:
          ax.set_xlabel(self.xlabel)  # type: ignore[arg-type]
          ax.set_ylabel(
              "Frequency" if self.ylabel is None else self.ylabel  # type: ignore[arg-type]
          )
  
imports: from __future__ import annotations
  from typing import TYPE_CHECKING, Any, Literal, final
  import numpy
  from pandas.core.dtypes.common import is_integer, is_list_like
  from pandas.core.dtypes.generic import ABCDataFrame, ABCIndex
  from pandas.core.dtypes.missing import isna, remove_na_arraylike
  from pandas.io.formats.printing import pprint_thing
  from pandas.plotting._matplotlib.core import LinePlot, MPLPlot
  from pandas.plotting._matplotlib.groupby import create_iter_data_given_by, reformat_hist_y_given_by
  from pandas.plotting._matplotlib.misc import unpack_single_str_list
  from pandas.plotting._matplotlib.tools import create_subplots, flatten_axes, maybe_adjust_figure, set_ticks_props
label_desc: Use image node_id 9 for calling the HistPlot obj's underlying member method code with example usage: obj._post_plot_logic(ax, data) without return types