def get_existing_object_values(self):
<EOL>if self._kwargs['<STR_LIT>'] not in ['<STR_LIT>']:<EOL><INDENT>raise errors.IllegalState()<EOL><DEDENT>return self._kwargs['<STR_LIT>']<EOL>
Gets the existing object values.

        If ``has_value()`` and ``is_required()`` are ``false,`` then
        these values are the default values ````. If ``is_array()`` is
        false, then this method returns at most a single value.

        return: (object) - the existing object values
        raise:  IllegalState - syntax is not an OBJECT or
                ``is_value_known()`` is ``false``
        *compliance: mandatory -- This method must be implemented.*