@staticmethod<EOL><INDENT>def export_lane_set(process, lane_set, plane_element):<DEDENT>
lane_set_xml = eTree.SubElement(process, consts.Consts.lane_set)<EOL>for key, value in lane_set[consts.Consts.lanes].items():<EOL><INDENT>BpmnDiagramGraphExport.export_lane(lane_set_xml, key, value, plane_element)<EOL><DEDENT>
Creates 'laneSet' element for exported BPMN XML file.

:param process: an XML element ('process'), from exported BPMN 2.0 document,
:param lane_set: dictionary with exported 'laneSet' element attributes and child elements,
:param plane_element: XML object, representing 'plane' element of exported BPMN 2.0 XML.