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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 write_cell(self, cell):
 """ Write the specified cell to the file. Parameters cell : ``Cell`` Cell to be written. Notes ----- Only the specified cell is written. Dependencies must be manually included. Returns ------- out : ``GdsWriter`` This object. """

        self._outfile.write(cell.to_gds(self._res))
        return self