def post(self, restApi, data={}, headers=None, silentMode=False, ignoreError=False):
        """
        Description
           A HTTP POST function to mainly used to create or start operations.
        
        Parameters
           restApi: The REST API URL.
           data: The data payload for the URL.
           headers: The special header to use for the URL.
           silentMode: True or False.  To display URL, data and header info.
           noDataJsonDumps: True or False. If True, use json dumps. Else, accept the data as-is. 
           ignoreError: True or False.  If False, the response will be returned. No exception will be raised.
        """

        if headers != None:
            originalJsonHeader = self.jsonHeader
            self.jsonHeader = headers

        data = json.dumps(data)

        if silentMode == False:
            self.logInfo('\n\tPOST: {0}\n\tDATA: {1}\n\tHEADERS: {2}'.format(restApi, data, self.jsonHeader))

        try:
            response = requests.post(restApi, data=data, headers=self.jsonHeader, verify=self.verifySsl)
            # 200 or 201
            if silentMode == False:
                self.logInfo('\tSTATUS CODE: %s' % response.status_code, timestamp=False)

            if not str(response.status_code).startswith('2'):
                if ignoreError == False:
                    raise IxLoadRestApiException('http POST error: {0}\n'.format(response.text))

            # Change it back to the original json header
            if headers != None:
                self.jsonHeader = originalJsonHeader

            return response

        except requests.exceptions.RequestException as errMsg:
            raise IxLoadRestApiException('http POST error: {0}\n'.format(errMsg))