code: def join(self, other):
      if not isinstance(other, AbstractSemaphore):
          raise ValueError
      if other.sem_type != self.sem_type:
          raise ValueError
      return self
  
imports: from __future__ import annotations
  from collections.abc import Sequence
  import dataclasses
  import enum
  import functools
  from typing import Any
  from jax._src import core
  from jax._src import dtypes
  from jax._src import state
  from jax._src import tree_util
  from jax._src import util
  import jax.numpy
  from jax._src.pallas import core
label_desc: Use image node_id 1 for calling the AbstractSemaphore obj's underlying member method code with example usage: obj.join(other) and returns: self