class_docstr: Represents a slice with a dynamic start index and a fixed size.
code: def __post_init__(self):
      if self.size < 0:
          raise ValueError("`size` must not be negative.")
  
imports: from __future__ import annotations
  import dataclasses
  from typing import Any, Union
  from jax._src import core
  from jax._src import tree_util
  from jax._src.typing import Array
  from jax._src.util import merge_lists
  from jax._src.util import partition_list
  import numpy
label_desc: Use image node_id 1 for calling the Slice obj's underlying member method code with example usage: obj.__post_init__() without return types