def load_all(self, keys=None, replace_existing_values=True):
if keys:<EOL><INDENT>key_data_list = list(map(self._to_data, keys))<EOL>return self._load_all_internal(key_data_list, replace_existing_values)<EOL><DEDENT>else:<EOL><INDENT>return self._encode_invoke(map_load_all_codec, replace_existing_values=replace_existing_values)<EOL><DEDENT>
Loads all keys from the store at server side or loads the given keys if provided.

:param keys: (Collection), keys of the entry values to load (optional).
:param replace_existing_values: (bool), whether the existing values will be replaced or not with those loaded
from the server side MapLoader (optional).