code: def get_size(ref_generator: DynamicObjectRefGenerator):
      print(ref_generator)
      num_elements = 0
      for ref in ref_generator:
          array = ray.get(ref)
          assert len(array) <= block_size
          num_elements += len(array)
      return num_elements
  
imports: import ray
  from ray import DynamicObjectRefGenerator
  import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: get_size(ref_generator) and returns: num_elements