def METHOD_NAME():
    assert utils.normalize_doi("10.1234/jshd123") == "10.1234/jshd123"
    assert utils.normalize_doi("10.1234/JSHD.8192") == "10.1234/JSHD.8192"
    assert utils.normalize_doi("doi.org/10.1234/jshd123") == "10.1234/jshd123"
    assert utils.normalize_doi("http://doi.org/10.1234/jshd123") == "10.1234/jshd123"
    assert utils.normalize_doi("https://doi.org/10.1234/jshd123") == "10.1234/jshd123"
    assert utils.normalize_doi("http://dx.doi.org/10.1234/jshd123") == "10.1234/jshd123"