code: def vstack(
      arrays: Sequence[ivy.Array],
      /,
      *,
      out: Optional[Union[ivy.Array, ivy.NativeArray]] = None,
  ) -> ivy.Array:
      """Stack arrays in sequence vertically (row wise).
  
      Parameters
      ----------
      arrays
          Sequence of arrays to be stacked.
  
      Returns
      -------
      ret
          The array formed by stacking the given arrays.
  
      Examples
      --------
      >>> x = ivy.array([1, 2, 3])
      >>> y = ivy.array([2, 3, 4])
      >>> ivy.vstack((x, y))
      ivy.array([[1, 2, 3],
             [2, 3, 4]])
      >>> ivy.vstack((x, y, x, y))
      ivy.array([[1, 2, 3],
                 [2, 3, 4],
                 [1, 2, 3],
                 [2, 3, 4]])
  
      >>> y = [ivy.array([[5, 6]]), ivy.array([[7, 8]])]
      >>> print(ivy.vstack(y))
      ivy.array([[5, 6],
                 [7, 8]])
      """
      return ivy.current_backend().vstack(arrays, out=out)
  
imports: from typing import Optional, Union, Tuple, Iterable, Sequence, Callable, Any, Literal, List
  from numbers import Number
  from functools import partial
  import math
  import ivy
  from ivy.func_wrapper import handle_out_argument, handle_partial_mixed_function, to_native_arrays_and_back, inputs_to_native_shapes, handle_nestable, handle_array_like_without_promotion, handle_view, inputs_to_ivy_arrays, handle_array_function, handle_device, handle_backend_invalid
  from ivy.functional.ivy.general import _numel
  from ivy.utils.backend import current_backend
  from ivy.utils.exceptions import handle_exceptions
label_desc: Use image node_id 8 for calling a global function with example usage: vstack() and returns: ivy