code: def _create_output_buffer_left(output_buffer_size):
      output_buffer_left = None
      if output_buffer_size:
          assert output_buffer_size > 0, (
              "Expected buffer size to be greater than zero, but got size %d "
              "instead." % (output_buffer_size,)
          )
          output_buffer_left = _get_context().Semaphore(
              output_buffer_size
          )
      return output_buffer_left
  
imports: from __future__ import print_function, division, absolute_import
  import sys
  import multiprocessing
  import threading
  import traceback
  import time
  import random
  import platform
  import numpy
  import cv2
  import imgaug.imgaug
  import imgaug.random
  from imgaug.augmentables.batches import Batch, UnnormalizedBatch
label_desc: Use image node_id 6 for calling a global function with example usage: _create_output_buffer_left(output_buffer_size) and returns: output_buffer_left