Return the path to the granules TrueColorImage.

def tci_path(self):
        """Return the path to the granules TrueColorImage."""
        tci_paths = [
            path for path in self.dataset._product_metadata.xpath(
                ".//Granule[@granuleIdentifier='%s']/IMAGE_FILE/text()"
                % self.granule_identifier
            ) if path.endswith('TCI')
        ]
        try:
            tci_path = tci_paths[0]
        except IndexError:
            return None

        return os.path.join(
            self.dataset._zip_root if self.dataset.is_zip else self.dataset.path,
            tci_path
        ) + '.jp2'