def METHOD_NAME():
    """Import Irap binary via bytesIO."""
    logger.info("Import file as BytesIO")
    with open(TESTSET1, "rb") as fin:
        stream = io.BytesIO(fin.read())
    print(dir(stream))
    print(type(stream.getvalue()))
    xsurf = xtgeo.surface_from_file(stream, fformat="irap_binary")
    assert xsurf.ncol == 554
    assert xsurf.nrow == 451
    assert abs(xsurf.values.mean() - 1698.648) < 0.01
    xsurf.describe()