pub type ETSTask = Option<unsafe extern "C" fn(_: *mut ETSEventTag)>;Aliased Type§
enum ETSTask {
    None,
    Some(unsafe extern "C" fn(_: *mut ETSEventTag)),
}pub type ETSTask = Option<unsafe extern "C" fn(_: *mut ETSEventTag)>;enum ETSTask {
    None,
    Some(unsafe extern "C" fn(_: *mut ETSEventTag)),
}