def fetch(self):
LOG.info('<STR_LIT>')<EOL>valid_inputs = self._check_inputs()<EOL>if valid_inputs:<EOL><INDENT>LOG.info('<STR_LIT>'.format(self._url))<EOL>self._submit_request()<EOL>if self._failed:<EOL><INDENT>return<EOL><DEDENT>LOG.info('<STR_LIT>')<EOL>self._parse_and_format()<EOL>return self.zpt_table<EOL><DEDENT>LOG.error('<STR_LIT>')<EOL>
Submit the request to the ACS Zeropoints Calculator.

        This method will:

        * submit the request
        * parse the response
        * format the results into a table with the correct units

        Returns
        -------
        tab : `astropy.table.QTable` or `None`
            If the request was successful, returns a table; otherwise, `None`.