def GetLastMember(sid):
    s = idaapi.get_struc(sid)
    if not s:
        return -1

    return idaapi.get_struc_last_offset(s)
Invoke an open method in both real and fkae contexts and compare.
dataset/ETHPy150Open EiNSTeiN-/idapython/python/idc.py/GetLastMember--crossover with--dataset/ETHPy150Open jmcgeheeiv/pyfakefs/fake_filesystem_vs_real_test.py/FakeFilesystemVsRealTest.DiffOpenMethodBehavior