startProcessInstanceButton = new Button(i18nManager.getMessage(Messages.PROCESS_START));
startProcessInstanceButton.addListener(new StartProcessInstanceClickListener(processDefinition, processDefinitionPage));
editProcessDefinitionButton = new Button(i18nManager.getMessage(Messages.PROCESS_CONVERT));
editProcessDefinitionButton.addListener(new ConvertProcessDefinitionToModelClickListener(processDefinition));
if(((ProcessDefinitionEntity) processDefinition).isGraphicalNotationDefined() == false) {
editProcessDefinitionButton.setEnabled(false);
}