code: def test_get_keras_hyperparameters_space(self, problem):
      spec = self._create_phoenix_spec(problem)
      _ = phoenix.Phoenix.get_keras_hyperparameters_space(
          phoenix_spec=spec, train_steps=10000
      )
  
imports: import os
  from absl import flags
  from absl.testing import parameterized
  from model_search import hparam
  from model_search import loss_fns
  from model_search import phoenix
  from model_search.architecture import architecture_utils
  from model_search.metadata import mock_metadata
  from model_search.proto import phoenix_spec_pb2
  import numpy
  import tensorflow.compat.v2
  from google.protobuf import text_format
label_desc: Use image node_id 4 for calling the PhoenixTest obj's underlying member method code with example usage: obj.test_get_keras_hyperparameters_space(problem) without return types