pub unsafe extern "C" fn rocksdb_get_options_from_string(
    base_options: *const DBOptionsOpaque, 
    opts: *const i8, 
    new_options: *const DBOptionsOpaque, 
    err: *mut *const i8
)pub unsafe extern "C" fn rocksdb_get_options_from_string(
    base_options: *const DBOptionsOpaque, 
    opts: *const i8, 
    new_options: *const DBOptionsOpaque, 
    err: *mut *const i8
)