code: def to_dict(self):
      all_primitives_dict = self.flatten_primitives()
      all_features_dict = self.flatten_features()
  
      return {
          "primitives": all_primitives_dict,
          "feature_ids": [f.id for f in self._all_features],
          "all_features": {
              k: f.to_dict() for k, f in all_features_dict.items()
          },
      }
  
imports: from __future__ import annotations
  import hashlib
  from itertools import combinations
  from typing import Any, Dict, List, Optional, Set, Type, Union, cast
  from woodwork.logical_types import LogicalType
  from featuretools.feature_discovery.LiteFeature import LiteFeature
  from featuretools.feature_discovery.type_defs import ANY
  from featuretools.feature_discovery.utils import hash_primitive, logical_types_map
  from featuretools.primitives.base.primitive_base import PrimitiveBase
  from featuretools.primitives.utils import PrimitivesDeserializer
label_desc: Use image node_id 18 for calling the FeatureCollection obj's underlying member method code with example usage: obj.to_dict() and returns: dict