InputStreamReader in = new InputStreamReader(bpmnStream, "UTF-8");
XMLStreamReader xtr = xif.createXMLStreamReader(in);
BpmnModel bpmnModel = new BpmnXMLConverter().convertToBpmnModel(xtr);
BpmnJsonConverter converter = new BpmnJsonConverter();
com.fasterxml.jackson.databind.node.ObjectNode modelNode = converter.convertToJson(bpmnModel);
Model modelData = repositoryService.newModel();
modelData.setKey(processDefinition.getKey());
modelData.setName(processDefinition.getResourceName());
modelData.setCategory(processDefinition.getDeploymentId());