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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def import_parallel_gateway_to_graph(diagram_graph, process_id, process_attributes, element):
 """ Adds to graph the new element that represents BPMN parallel gateway. Parallel gateway doesn't have additional attributes. Separate method is used to improve code readability. :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 'parallelGateway'. """

        BpmnDiagramGraphImport.import_gateway_to_graph(diagram_graph, process_id, process_attributes, element)