class_docstr: Represents a slice with a dynamic start index and a fixed size.
code: def tree_flatten(self):
      # If `start` is statically known, we treat it as static information
      if isinstance(self.start, int):
          return (), (self.start, self.size)
      return (self.start,), (self.size,)
  
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 2 for calling the Slice obj's underlying member method code with example usage: obj.tree_flatten() and returns: self,  self, ,  self,  self