code: def get_blocks_search_space(blocks_to_use=None):
      return block_builder.Blocks.search_space(
          blocks_to_use=blocks_to_use
      )
  
imports: import collections
  import os
  import string
  import time
  from absl import flags
  from absl import logging
  from model_search import block
  from model_search import block_builder
  from model_search import hparam
  from model_search import utils
  from model_search.proto import hparam_pb2
  from model_search.proto import phoenix_spec_pb2
  from model_search.proto import transfer_learning_spec_pb2
  import numpy
  import tensorflow.compat.v2
  import tf_slim
  from google.protobuf import text_format
label_desc: Use image node_id 1 for calling a global function with example usage: get_blocks_search_space(blocks_to_use) and returns: block_builder