def METHOD_NAME():
    no_quotes = "LAST^FIRST"
    left_quote = "'LAST^FIRST"
    both_quotes = "'LAST^FIRST'"
    middle_only_quotes = "LAST'S^FIRST"
    middle_with_both_quotes = "'LAST'S^FIRST"
    assert no_quotes == _trim_bracketing_single_quotes(no_quotes)
    assert no_quotes == _trim_bracketing_single_quotes(left_quote)
    assert no_quotes == _trim_bracketing_single_quotes(both_quotes)
    assert no_quotes != _trim_bracketing_single_quotes(middle_only_quotes)
    assert middle_only_quotes == _trim_bracketing_single_quotes(middle_with_both_quotes)