@migration_token.setter<EOL><INDENT>def migration_token(self, migration_token):<DEDENT>
self._migration_token = migration_token<EOL>
Sets the migration_token of this ObtainTokenRequest.
Legacy OAuth access token obtained using a Connect API version prior to 2019-03-13. This parameter is required if `grant_type` is set to `migration_token` to indicate that the application wants to get a replacement OAuth access token. The response also returns a refresh token. For more information, see [Migrate to Using Refresh Tokens](/authz/oauth/migration).

:param migration_token: The migration_token of this ObtainTokenRequest.
:type: str