List Ongoing" 
                                     action="#{processController.listOngoingProcessInstances()}" 
                                     ajax="false"
                                     class="ui-button-warning m-2" 
                                     icon="fas fa-sync-alt" />

                    <p:commandButton value="List Completed" 
                                     action="#{processController.listCompletedProcessInstances()}" 
                                     ajax="false"
      