code: def dslice(
      start: int | Array | None, size: int | None = None
  ) -> slice | Slice:
      """Constructs a `Slice` from a start and a size."""
      if start is None:
          return slice(None)
      if size is None:
          if not isinstance(start, int):
              raise ValueError("Non-static `dslice`")
          return Slice(0, start)
      return Slice(start, 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 1 for calling a global function with example usage: dslice(start, size) and returns: Slice, slice, Slice