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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 _handle_tag_definefontname(self):
 """Handle the DefineFontName tag."""

        obj = _make_object("DefineFontName")
        obj.FontId = unpack_ui16(self._src)
        obj.FontName = self._get_struct_string()
        obj.FontCopyright = self._get_struct_string()
        return obj