def internal_prep_private_message(realm: Realm, sender: UserProfile, recipient_user: UserProfile, content: str) -> Optional[Dict[(str, Any)]]:
    '\n    See _internal_prep_message for details of how this works.\n    '
    addressee = Addressee.for_user_profile(recipient_user)
    return _internal_prep_message(realm=realm, sender=sender, addressee=addressee, content=content)
See _internal_prep_message for details of how this works.
def internal_prep_private_message(realm: Realm, sender: UserProfile, recipient_user: UserProfile, content: str) -> Optional[Dict[(str, Any)]]:
    '\n    \n    '
    addressee = Addressee.for_user_profile(recipient_user)
    return _internal_prep_message(realm=realm, sender=sender, addressee=addressee, content=content)