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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 normalizeFileFormatVersion(value):
 """ Normalizes a font's file format version. * **value** must be a :ref:`type-int`. * Returned value will be a ``int``. """

    if not isinstance(value, int):
        raise TypeError("File format versions must be instances of "
                        ":ref:`type-int`, not %s."
                        % type(value).__name__)
    return value