pub unsafe extern "C" fn fdf_channel_call(
handle: fdf_handle_t,
options: u32,
deadline: zx_time_t,
args: *const fdf_channel_call_args_t,
) -> zx_status_t
pub unsafe extern "C" fn fdf_channel_call(
handle: fdf_handle_t,
options: u32,
deadline: zx_time_t,
args: *const fdf_channel_call_args_t,
) -> zx_status_t