pub type git_push_negotiation = Option<extern "C" fn(*mut *const git_push_update, size_t, *mut c_void) -> c_int>;Aliased Type§
enum git_push_negotiation {
    None,
    Some(extern "C" fn(_: *mut *const git_push_update, _: usize, _: *mut c_void) -> i32),
}