taskAssignBase = taskAssignBase.get("properties");
JsonNode assigneeType = JsonConverterUtil.getChildElementByProperty("assignpolicytype", "id", (ArrayNode)taskAssignBase);
ArrayNode arrayNode = objectMapper.createArrayNode();
AssignPolicyConfig assignPolicyConfig = ProcessEngineManagement.getDefaultProcessEngine().getProcessEngineConfiguration().getAssignPolicyConfig();
List<AssignPolicy> assignPolicys = assignPolicyConfig.getAssignPolicy();
for(AssignPolicy assignPolicy :assignPolicys){
ObjectNode typeNode = objectMapper.createObjectNode();
typeNode.put("id",assignPolicy.getId());
typeNode.put("title", assignPolicy.getName());
typeNode.put("value", assignPolicy.getId());