@staticmethod<EOL><INDENT>def export_data_object_info(bpmn_diagram, data_object_params, output_element):<DEDENT>
output_element.set(consts.Consts.is_collection, data_object_params[consts.Consts.is_collection])<EOL>
Adds DataObject node attributes to exported XML element

:param bpmn_diagram: BPMNDiagramGraph class instantion representing a BPMN process diagram,
:param data_object_params: dictionary with given subprocess parameters,
:param output_element: object representing BPMN XML 'subprocess' element.