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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 commit(self, wait=False, additionalParams={}):
 """ Commit is called once all parts are uploaded during a multipart Add Item or Update Item operation. The parts are combined into a file, and the original file is overwritten during an Update Item operation. This is an asynchronous call and returns immediately. Status can be used to check the status of the operation until it is completed. Inputs: itemId - unique item id folderId - folder id value, optional wait - stops the thread and waits for the commit to finish or fail. additionalParams - optional key/value pair like type : "File Geodatabase". This is mainly used when multipart uploads occur. """


        url = "%s/commit" % self.root
        params = {
            "f" : "json",
        }
        for key, value in additionalParams.items():
            params[key] = value
        if wait == True:
            res = self._post(url=url,
                                param_dict=params,
                                securityHandler=self._securityHandler,
                                proxy_port=self._proxy_port,
                                proxy_url=self._proxy_url)
            res = self.status()
            import time
            while res['status'].lower() in ["partial", "processing"]:
                time.sleep(2)
                res = self.status()
            return res
        else:
            return self._post(url=url,
                                 param_dict=params,
                                 securityHandler=self._securityHandler,
                                 proxy_port=self._proxy_port,
                                 proxy_url=self._proxy_url)