def METHOD_NAME():
    import sys
    filename = os.path.join(ROOT, 'test_fixed.h5')
    filename = os.path.join(ROOT, 'test_table_no_dc.h5')
    if len(sys.argv) > 1:
        filename = sys.argv[1]
    a_tree = ATree(h5_tree=_hdf5_tree(filename))
    return a_tree