def CoefficientOfNetworkComplexity_metric(bpmn_graph):
return float(len(bpmn_graph.get_flows())) / float(len(bpmn_graph.get_nodes()))<EOL>
Returns the value of the Coefficient of Network Complexity metric
("Ratio of the total number of arcs in a process model to its total number of nodes.")
for the BPMNDiagramGraph instance.

:param bpmn_graph: an instance of BpmnDiagramGraph representing BPMN model.