public void drawSequenceFlow(BufferedImage image,
String processDefinitionId, String sequenceFlowId) {
GetBpmnModelCmd getBpmnModelCmd = new GetBpmnModelCmd(
processDefinitionId);
BpmnModel bpmnModel = getBpmnModelCmd.execute(Context
.getCommandContext());
Graphics2D graphics = image.createGraphics();
graphics.setPaint(HISTORY_COLOR);
graphics.setStroke(new BasicStroke(2f));