class_docstr: PyVista wrapping of vtkCellArray.
  
  Provides convenience functions to simplify creating a CellArray from
  a numpy array or list.
  
  Parameters
  ----------
  cells : np.ndarray or list, optional
      Import an array of data with the legacy vtkCellArray layout, e.g.
      ``{ n0, p0_0, p0_1, ..., p0_n, n1, p1_0, p1_1, ..., p1_n, ... }``
      Where n0 is the number of points in cell 0, and pX_Y is the Y'th
      point in cell X.
  
  n_cells : int, optional
      The number of cells.
  
  deep : bool, default: False
      Perform a deep copy of the original cell.
  
  Examples
  --------
  Create a cell array containing two triangles from the traditional interleaved format
  
  >>> from pyvista.core.cell import CellArray
  >>> cellarr = CellArray([3, 0, 1, 2, 3, 3, 4, 5])
  
  Create a cell array containing two triangles from separate offsets and connectivity arrays
  
  >>> from pyvista.core.cell import CellArray
  >>> offsets = [0, 3, 6]
  >>> connectivity = [0, 1, 2, 3, 4, 5]
  >>> cellarr = CellArray.from_arrays(offsets, connectivity)
docstr: Return the array used to store cell offsets.
  
  Returns
  -------
  np.ndarray
      Array used to store cell offsets.
docstr_tok: ["Return","the","array","used","to","store","cell","offsets",".","Returns","--","--","--","-","np.ndarray","Array","used","to","store","cell","offsets","."]
code: def offset_array(self) -> NumpyArray[int]:  # numpydoc ignore=RT01
      """Return the array used to store cell offsets.
  
      Returns
      -------
      np.ndarray
          Array used to store cell offsets.
      """
      return _get_offset_array(self)
  
imports: from __future__ import annotations
  from typing import List, Optional, Sequence, Tuple, Union, cast
  import numpy
  import pyvista
  from .None import _vtk_core
  from ._typing_core import Matrix, NumpyArray, Vector
  from .celltype import CellType
  from .dataset import DataObject
  from .errors import CellSizeError
  from .utilities.cells import ncells_from_cells, numpy_to_idarr
label_desc: Use image node_id 6 for calling the CellArray obj's underlying member method code with example usage: obj.offset_array() and returns: _get_offset_array