/**
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* 生成默认的 BPMN 流程图 XML
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*
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* 历史问题：这里原本只生成一个空的 <bpmn2:process>，没有任何节点，
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* 打开「流程模型 → 修改 → 流程设计」时画布一片空白，客户反馈「没有流程模型，需要配置一下」。
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*
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* 现改为生成一个可用的最小流程骨架：发起人 → 审批人 → 结束，
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* 客户打开即可在画布上直接选中节点配置审批人，或继续增删节点。
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* 注意：审批节点故意不预置办理人，由客户在右侧属性面板里选择。
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*/
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function defaultEmpty(key, name, type) {
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if (!type) type = 'camunda';
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const TYPE_TARGET = {
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activiti: 'http://activiti.org/bpmn',
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camunda: 'http://bpmn.io/schema/bpmn',
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flowable: 'http://flowable.org/bpmn',
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};
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// 扩展属性（如 flowable:assignee）的命名空间，camunda 与 bpmn.io 的 targetNamespace 不同
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const TYPE_EXTENSION_NS = {
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activiti: 'http://activiti.org/bpmn',
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camunda: 'http://camunda.org/schema/1.0/bpmn',
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flowable: 'http://flowable.org/bpmn',
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};
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return `<?xml version="1.0" encoding="UTF-8"?>
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<bpmn2:definitions
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:bpmn2="http://www.omg.org/spec/BPMN/20100524/MODEL"
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xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
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xmlns:dc="http://www.omg.org/spec/DD/20100524/DC"
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xmlns:di="http://www.omg.org/spec/DD/20100524/DI"
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xmlns:${type}="${TYPE_EXTENSION_NS[type]}"
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id="diagram_${key}"
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targetNamespace="${TYPE_TARGET[type]}">
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<bpmn2:process id="${key}" name="${name}" isExecutable="true">
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<bpmn2:startEvent id="StartEvent_1" name="发起人">
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<bpmn2:outgoing>Flow_1</bpmn2:outgoing>
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</bpmn2:startEvent>
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<bpmn2:sequenceFlow id="Flow_1" sourceRef="StartEvent_1" targetRef="Activity_1" />
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<bpmn2:userTask id="Activity_1" name="审批人">
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<bpmn2:incoming>Flow_1</bpmn2:incoming>
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<bpmn2:outgoing>Flow_2</bpmn2:outgoing>
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</bpmn2:userTask>
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<bpmn2:sequenceFlow id="Flow_2" sourceRef="Activity_1" targetRef="EndEvent_1" />
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<bpmn2:endEvent id="EndEvent_1" name="结束">
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<bpmn2:incoming>Flow_2</bpmn2:incoming>
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</bpmn2:endEvent>
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</bpmn2:process>
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<bpmndi:BPMNDiagram id="BPMNDiagram_1">
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<bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="${key}">
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<bpmndi:BPMNShape id="StartEvent_1_di" bpmnElement="StartEvent_1">
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<dc:Bounds x="180" y="160" width="36" height="36" />
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<bpmndi:BPMNLabel>
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<dc:Bounds x="187" y="203" width="22" height="14" />
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</bpmndi:BPMNLabel>
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</bpmndi:BPMNShape>
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<bpmndi:BPMNShape id="Activity_1_di" bpmnElement="Activity_1">
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<dc:Bounds x="280" y="138" width="100" height="80" />
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<bpmndi:BPMNLabel />
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</bpmndi:BPMNShape>
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<bpmndi:BPMNShape id="EndEvent_1_di" bpmnElement="EndEvent_1">
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<dc:Bounds x="432" y="160" width="36" height="36" />
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<bpmndi:BPMNLabel>
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<dc:Bounds x="439" y="203" width="22" height="14" />
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</bpmndi:BPMNLabel>
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</bpmndi:BPMNShape>
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<bpmndi:BPMNEdge id="Flow_1_di" bpmnElement="Flow_1">
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<di:waypoint x="216" y="178" />
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<di:waypoint x="280" y="178" />
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</bpmndi:BPMNEdge>
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<bpmndi:BPMNEdge id="Flow_2_di" bpmnElement="Flow_2">
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<di:waypoint x="380" y="178" />
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<di:waypoint x="432" y="178" />
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</bpmndi:BPMNEdge>
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</bpmndi:BPMNPlane>
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</bpmndi:BPMNDiagram>
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</bpmn2:definitions>`;
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}
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export default defaultEmpty;
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