<filename>app_models/__init__.py
from .base_model import BaseModel
from .user_model import UserModel
from .credentials_model import CredentialsModel
from .thread_invitation_model import ThreadInvitationModel
from .thread_model import ThreadModel
from .user_model import UserModel
from .thread_application_model import ThreadApplicationModel
from .thread_message_model import ThreadMessageModel
from .username_validation_model import UsernameValidationModel

<filename>app_models/__init__.py
from .base_model import BaseModel
from .user_model import UserModel
from .credentials_model import CredentialsModel
from .thread_invitation_model import ThreadInvitationModel
from .thread_model import ThreadModel
from .user_model import UserModel
from .thread_application_model import ThreadApplicationModel
from .thread_message_model import ThreadMessageModel
from .username_validation_model import UsernameValidationModel
