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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:
 async def synchronize(self, pid, vendor_specific=None):
 """Send an object synchronization request to the CN."""

        return await self._request_pyxb(
            "post",
            ["synchronize", pid],
            {},
            mmp_dict={"pid": pid},
            vendor_specific=vendor_specific,
        )