code: def import_event_based_gateway_to_graph(diagram_graph, process_id, process_attributes, element):
          
          element_id = element.getAttribute(consts.Consts.id)
          BpmnDiagramGraphImport.import_gateway_to_graph(diagram_graph, process_id, process_attributes, element)
          diagram_graph.node[element_id][consts.Consts.instantiate] = element.getAttribute(consts.Consts.instantiate) \
              if element.hasAttribute(consts.Consts.instantiate) else "false"
          diagram_graph.node[element_id][consts.Consts.event_gateway_type] = \
              element.getAttribute(consts.Consts.event_gateway_type) \
                  if element.hasAttribute(consts.Consts.event_gateway_type) else "Exclusive"
docs: Adds to graph the new element that represents BPMN event based gateway.
          In addition to attributes inherited from Gateway type, event based gateway has additional
          attributes - instantiate (boolean type, default value - false) and eventGatewayType
          (custom type tEventBasedGatewayType, default value - Exclusive).
  
          :param diagram_graph: NetworkX graph representing a BPMN process diagram,
          :param process_id: string object, representing an ID of process element,
          :param process_attributes: dictionary that holds attribute values of 'process' element, which is parent of
             imported flow node,
          :param element: object representing a BPMN XML 'eventBasedGateway' element.