code: def __init__(self, feature_list):
      self.feature_list = feature_list
      self._features_dict = None
  
file_path: featuretools/featuretools/feature_base/features_serializer.py
imports: import json
  from featuretools.primitives.utils import serialize_primitive
  from featuretools.utils.s3_utils import get_transport_params, use_smartopen_features
  from featuretools.utils.wrangle import _is_s3, _is_url
  from featuretools.version import FEATURES_SCHEMA_VERSION
  from featuretools.version import __version__
label_desc: Use image node_id 1 to create a new FeaturesSerializer object from inherited base classes: object with example: obj = FeaturesSerializer(feature_list)