code: def member_count(self):
      return len(self.members)
  
imports: from typing import Dict
  from typing import List
  from typing import Optional
  from typing import Set
  from typing import Tuple
  from typing_extensions import Self
  from ...serde.serializable import serializable
  from ...store.document_store import PartitionKey
  from ...types.syft_object import SYFT_OBJECT_VERSION_1
  from ...types.syft_object import SyftObject
  from ...types.transforms import TransformContext
  from ...types.transforms import add_node_uid_for_key
  from ...types.transforms import generate_id
  from ...types.transforms import transform
  from ...types.uid import UID
  from ...util.markdown import as_markdown_python_code
  from ..response import SyftError
label_desc: Use image node_id 1 for calling the DataSubjectCreate obj's underlying member method code with example usage: obj.member_count() and returns: len