code: def download_url(self):
      return "https://storage.googleapis.com/262k_binned/cage10_l262k_w128.h5"
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import math
  import multiprocessing
  import os
  import h5py
  import numpy
  from six.moves import range
  from tensor2tensor.data_generators import dna_encoder
  from tensor2tensor.data_generators import generator_utils
  from tensor2tensor.data_generators import problem
  from tensor2tensor.data_generators import text_encoder
  from tensor2tensor.layers import modalities
  from tensor2tensor.utils import metrics
  from tensor2tensor.utils import registry
  import tensorflow.compat.v1
label_desc: Use image node_id 1 for calling the GenomicsExpressionCage10 obj's underlying member method code with example usage: obj.download_url() and returns: str