definition.setDescription("This is the description");
definition.setId("workflowdefinition");
definition.setName("My workflow definition");
WorkflowDefinitionConversion conversion = conversionFactory.createWorkflowDefinitionConversion(definition);
conversion.convert();
BpmnModel bpmnModel = conversion.getBpmnModel();
assertNotNull(bpmnModel);
Process process = bpmnModel.getMainProcess();