Function safe_app::ffi::mutable_data::mdata_get_version

#[no_mangle]
pub unsafe extern "C" fn mdata_get_version(
    app: *const App, 
    info: *const FfiMDataInfo, 
    user_data: *mut c_void, 
    o_cb: extern "C" fn(_: *mut c_void, _: *const FfiResult, _: u64)
)

Get version of the mutable data.

Callback parameters: user data, error code, version