class_docstr: Concatenates slices, scalars and array-like objects along a given axis.
code: def __len__(self) -> int:
      return 0
  
imports: from __future__ import annotations
  import abc
  from collections.abc import Iterable
  from typing import Any, Union
  import jax
  from jax._src import core
  from jax._src.numpy.util import promote_dtypes
  from jax._src.numpy.lax_numpy import arange, array, concatenate, expand_dims, linspace, meshgrid, stack, transpose
  from jax._src.typing import Array, ArrayLike
  import numpy
label_desc: Use image node_id 2 for calling the _AxisConcat obj's underlying member method code with example usage: obj.__len__() and returns: int