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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _zom_name(lexer):
 """Return zero or more names."""

    tok = next(lexer)
    # '.' NAME ZOM_NAME
    if isinstance(tok, DOT):
        first = _expect_token(lexer, {NameToken}).value
        rest = _zom_name(lexer)
        return (first, ) + rest
    # null
    else:
        lexer.unpop_token(tok)
        return tuple()