pub unsafe extern "C" fn sodot_bip340_sign(
room: Room,
secret_share: ConstStr,
msg_hex: ConstStr,
derivation_path: ConstSlice_u32,
opt_tweak: ConstStr,
callback: Option<unsafe extern "C" fn(extra: *mut c_void, result: ResultFFI, signature: ConstStr)>,
extra: *mut c_void,
) -> ResultFFI