code: def _validate_set_axis(
      self, axis: AxisInt, new_labels: Index
  ) -> None:
      # Caller is responsible for ensuring we have an Index object.
      old_len = len(self.axes[axis])
      new_len = len(new_labels)
  
      if axis == 1 and len(self.items) == 0:
          # If we are setting the index on a DataFrame with no columns,
          #  it is OK to change the length.
          pass
  
      elif new_len != old_len:
          raise ValueError(
              f"Length mismatch: Expected axis has {old_len} elements, new "
              f"values have {new_len} elements"
          )
  
imports: from __future__ import annotations
  from typing import TYPE_CHECKING, Any, Literal, cast, final
  import numpy
  from pandas._config import using_copy_on_write, warn_copy_on_write
  from pandas._libs import algos, lib
  from pandas.errors import AbstractMethodError
  from pandas.util._validators import validate_bool_kwarg
  from pandas.core.dtypes.cast import find_common_type, np_can_hold_element
  from pandas.core.dtypes.dtypes import ExtensionDtype, SparseDtype
  from pandas.core.base import PandasObject
  from pandas.core.construction import extract_array
  from pandas.core.indexes.api import Index, default_index
label_desc: Use image node_id 5 for calling the DataManager obj's underlying member method code with example usage: obj._validate_set_axis(axis, new_labels) without return types