错误提示：
Cannot complete the install because one or more required items could not be found.
Software being installed: Flowable Eclipse BPMN 2.0 Designer 5.22.0 (org.flowable.designer.feature.feature.group 5.22.0)
Missing requirement: Graphiti (Incubation) 0.13.1.v20160830-1309 (org.eclipse.graphiti 0.13.1.v20160830-1309) requires 'bundle org.eclipse.emf.transaction [1.8.0,2.0.0)' but it could not be found
Cannot satisfy dependency:
From: Graphiti (Incubation) 0.13.1.v20160830-1309 (org.eclipse.graphiti.feature.feature.group 0.13.1.v20160830-1309)
To: org.eclipse.graphiti [0.13.1.v20160830-1309]
Cannot satisfy dependency:
From: Flowable Eclipse BPMN 2.0 Designer 5.22.0 (org.flowable.designer.feature.feature.group 5.22.0)
To: org.eclipse.graphiti.feature.feature.group [0.13.1.v20160830-1309]
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