pub unsafe extern "C" fn mdb_cursor_get(
cursor: *mut MDB_cursor,
key: *mut MDB_val,
data: *mut MDB_val,
op: MDB_cursor_op,
) -> c_int
pub unsafe extern "C" fn mdb_cursor_get(
cursor: *mut MDB_cursor,
key: *mut MDB_val,
data: *mut MDB_val,
op: MDB_cursor_op,
) -> c_int