async def METHOD_NAME(
    conn: triopg._triopg.TrioConnectionProxy, organization_id: OrganizationID, vlob_id: VlobID
) -> RealmID:
    realm_id_uuid = await conn.fetchval(
        *_q_get_realm_id_from_vlob_id(organization_id=organization_id.str, vlob_id=vlob_id)
    )
    if not realm_id_uuid:
        raise VlobNotFoundError(f"Vlob `{vlob_id.hex}` doesn't exist")
    return RealmID.from_hex(realm_id_uuid)