code: def get_ray_mosaic_dataset(mosaic_data_root):
      mds_source = MdsDatasource(mosaic_data_root)
      return ray.data.read_datasource(mds_source)
  
imports: import ray
  import torch
  import torchvision
  from torchvision.transforms.functional import pil_to_tensor
  import os
  import tensorflow
  import numpy
  from PIL import Image
  from typing import TYPE_CHECKING, Iterator, Callable, Any
  import pandas
  from benchmark import Benchmark
  import streaming
  from streaming import LocalDataset, StreamingDataset
  from ray.data._internal.delegating_block_builder import DelegatingBlockBuilder
label_desc: Use image node_id 12 for calling a global function with example usage: get_ray_mosaic_dataset(mosaic_data_root) and returns: ray