<persisters>
   <persister name="TestPersister"
              class="Workflow::Persister::DBI::ExtraData"
              dsn="DBI:SQLite:dbname=db/ticket.db"
              extra_table="workflow_ticket"
              extra_data_field="ticket_id"/>
<!--
   <persister name="TestPersister"
              class="Workflow::Persister::DBI::ExtraData"
              dsn="DBI:CSV:f_dir=db/"
              extra_table="workflow_ticket"
              extra_data_field="ticket_id"/>
-->
</persisters>