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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 _prepare_ogc_request_params(self):
 """ Method makes sure that correct parameters will be used for download of S-2 bands. """

        self.ogc_request.image_format = MimeType.TIFF_d32f
        if self.ogc_request.custom_url_params is None:
            self.ogc_request.custom_url_params = {}
        self.ogc_request.custom_url_params.update({
            CustomUrlParam.SHOWLOGO: False,
            CustomUrlParam.TRANSPARENT: True,
            CustomUrlParam.EVALSCRIPT: S2_BANDS_EVALSCRIPT if self.all_bands else MODEL_EVALSCRIPT,
            CustomUrlParam.ATMFILTER: 'NONE'
        })
        self.ogc_request.create_request(reset_wfs_iterator=False)