def get_last_name_first_name(self):
last_names = []<EOL>if self._get_last_names():<EOL><INDENT>last_names += self._get_last_names()<EOL><DEDENT>first_and_additional_names = []<EOL>if self._get_first_names():<EOL><INDENT>first_and_additional_names += self._get_first_names()<EOL><DEDENT>if self._get_additional_names():<EOL><INDENT>first_and_additional_names += self._get_additional_names()<EOL><DEDENT>if last_names and first_and_additional_names:<EOL><INDENT>return "<STR_LIT>".format(<EOL>helpers.list_to_string(last_names, "<STR_LIT:U+0020>"),<EOL>helpers.list_to_string(first_and_additional_names, "<STR_LIT:U+0020>"))<EOL><DEDENT>elif last_names:<EOL><INDENT>return helpers.list_to_string(last_names, "<STR_LIT:U+0020>")<EOL><DEDENT>elif first_and_additional_names:<EOL><INDENT>return helpers.list_to_string(first_and_additional_names, "<STR_LIT:U+0020>")<EOL><DEDENT>else:<EOL><INDENT>return self.get_full_name()<EOL><DEDENT>
:rtype: str