def add_showanswer(self, showanswer):
if showanswer is None:<EOL><INDENT>raise NullArgument('<STR_LIT>')<EOL><DEDENT>if not self.my_osid_object_form._is_valid_string(<EOL>showanswer, self.get_showanswer_metadata()):<EOL><INDENT>raise InvalidArgument('<STR_LIT>')<EOL><DEDENT>self.my_osid_object_form._my_map['<STR_LIT>'] = showanswer<EOL>
stub