pub unsafe extern "C" fn rocksdb_writebatch_delete_rangev_cf(
b: *mut rocksdb_writebatch_t,
column_family: *mut rocksdb_column_family_handle_t,
num_keys: c_int,
start_keys_list: *const *const c_char,
start_keys_list_sizes: *const usize,
end_keys_list: *const *const c_char,
end_keys_list_sizes: *const usize
)