added example

examples/wf_net_to_powl_alt.py

@@ -0,0 +1,21 @@
+def execute_script():
+    import pm4py
+    from pm4py.objects.conversion.wf_net.variants import to_powl
+
+    log = pm4py.read_xes("../tests/input_data/receipt.xes")
+    log = pm4py.filter_variants_top_k(log, 11)
+
+    powl = pm4py.discover_powl(log)
+    print(powl)
+    net, im, fm = pm4py.convert_to_petri_net(powl)
+
+    powl2 = to_powl.apply(net, im, fm)
+    print(powl2)
+    net2, im2, fm2 = pm4py.convert_to_petri_net(powl2)
+
+    fitness = pm4py.fitness_alignments(log, net, im, fm)
+    print(fitness)
+
+
+if __name__ == "__main__":
+    execute_script()