See this page for bpmn examples:
https://github.com/kiegroup/jbpm/tree/master/jbpm-examples/src/main/resources

<?xml version="1.0" encoding="UTF-8"?> <definitions id="Definition" targetNamespace="http://www.jboss.org/drools" typeLanguage="http://www.java.com/javaTypes" expressionLanguage="http://www.mvel.org/2.0" xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" xmlns:g="http://www.jboss.org/drools/flow/gpd" xmlns:tns="http://www.jboss.org/drools" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.omg.org/spec/BPMN/20100524/MODEL BPMN20.xsd"> <itemDefinition id="t_ProcessRuntimePayload" structureRef="mtitek.process.runtime.ProcessRuntimePayload" /> <process id="mtitek.process.app.hello.id.1" name="mtitek-process-app-hello-id-1" tns:packageName="mtitek.process.workItems" processType="Private" isExecutable="true" tns:version="1"> <extensionElements> <tns:import name="mtitek.process.runtime.ProcessRuntimePayload" /> </extensionElements> <!-- process variables --> <property id="v_in_ProcessRuntimePayload" itemSubjectRef="t_ProcessRuntimePayload" /> <!-- nodes: process events --> <startEvent id="startEvent_1" name="START_EVENT_1" isInterrupting="false" /> <endEvent id="endEvent_1" name="END_EVENT_1"> <terminateEventDefinition /> </endEvent> <!-- nodes: process tasks --> <task id="helloTask" name="HELLO_TASK" tns:taskName="helloTask"> <ioSpecification> <dataInput id="helloTask_p_in_ProcessRuntimePayload" name="p_in_ProcessRuntimePayload" /> <inputSet> <dataInputRefs>helloTask_p_in_ProcessRuntimePayload</dataInputRefs> </inputSet> <outputSet /> </ioSpecification> <dataInputAssociation> <sourceRef>v_in_ProcessRuntimePayload</sourceRef> <targetRef>helloTask_p_in_ProcessRuntimePayload</targetRef> </dataInputAssociation> </task> <!-- connections --> <sequenceFlow id="startEvent_1-helloTask" sourceRef="startEvent_1" targetRef="helloTask" /> <sequenceFlow id="helloTask-endEvent_1" sourceRef="helloTask" targetRef="endEvent_1" /> </process> <bpmndi:BPMNDiagram> <bpmndi:BPMNPlane bpmnElement="mtitek.process.app.hello.id.1"> <bpmndi:BPMNShape bpmnElement="startEvent_1"> <dc:Bounds x="101" y="51" width="48" height="48" /> </bpmndi:BPMNShape> <bpmndi:BPMNShape bpmnElement="endEvent_1"> <dc:Bounds x="551" y="51" width="48" height="48" /> </bpmndi:BPMNShape> <bpmndi:BPMNShape bpmnElement="helloTask"> <dc:Bounds x="250" y="50" width="200" height="50" /> </bpmndi:BPMNShape> <bpmndi:BPMNEdge bpmnElement="helloTask-endEvent_1"> <di:waypoint x="350" y="75" /> <di:waypoint x="575" y="75" /> </bpmndi:BPMNEdge> <bpmndi:BPMNEdge bpmnElement="startEvent_1-helloTask"> <di:waypoint x="125" y="75" /> <di:waypoint x="350" y="75" /> </bpmndi:BPMNEdge> </bpmndi:BPMNPlane> </bpmndi:BPMNDiagram> </definitions>