# Bpmn IO The implementation of data storage in this project is rather basic. It relies on object assigned to `environment.variables._data`. Use it for reference and preferably override it with your own implementation. # DataObject Process data object element # DataStoreReference Process data store reference element. Will be returned since some modellers don't add a datastore when designing. # DataStore Definition data store # InputOutputSpecification Activity input/output element # Property Activity property element