def is_read_only(self):
<EOL>return self._kwargs['<STR_LIT>']<EOL>
Tests if this data can be updated.

        This may indicate the result of a pre-authorization but is not a
        guarantee that an authorization failure will not occur when the
        create or update transaction is issued.

        return: (boolean) - ``true`` if this data is not updatable,
                ``false`` otherwise
        *compliance: mandatory -- This method must be implemented.*