inputCollectionExpression.setValue(inputDataCollection);
loopDataInputCollection.setExpression(inputCollectionExpression);
BpmnModelUtil.addExtensionElement(newLoopCharacteristics, FixFlowPackage.Literals.DOCUMENT_ROOT__LOOP_DATA_INPUT_COLLECTION, loopDataInputCollection);
//输出数据集
LoopDataOutputCollection loopDataOutputCollection = FixFlowFactory.eINSTANCE.createLoopDataOutputCollection();
Expression outputCollectionExpression = FixFlowFactory.eINSTANCE.createExpression();
outputCollectionExpression.setName(outputDataCollection);
outputCollectionExpression.setValue(outputDataCollection);
loopDataOutputCollection.setExpression(outputCollectionExpression);
BpmnModelUtil.addExtensionElement(newLoopCharacteristics, FixFlowPackage.Literals.DOCUMENT_ROOT__LOOP_DATA_OUTPUT_COLLECTION, loopDataOutputCollection);
//完成表达式
FormalExpression formalExpression= Bpmn2Factory.eINSTANCE.createFormalExpression();
formalExpression.setId(completeExpression);