How to use the asu.utils.image.Image function in asu

def build(self):
        self.log.debug("create and parse manifest")

        # fail path in case of erros
        fail_log_path = self.config.get_folder(
            "download_folder"
        ) + "/faillogs/faillog-{}.txt".format(self.params["request_hash"])

        self.image = Image(self.params)

        if self.params["packages_hash"]:
            packages_image = set(self.database.get_packages_image(self.params))
            self.log.debug("packages_image %s", packages_image)
            packages_requested = set(
                self.database.get_packages_hash(self.params["packages_hash"])
            )
            self.log.debug("packages_requested %s", packages_requested)
            packages_remove = packages_image - packages_requested
            self.log.debug("packages_remove %s", packages_remove)
            packages_requested.update(set(map(lambda x: "-" + x, packages_remove)))
            self.params["packages"] = " ".join(packages_requested)
            self.log.debug("packages param %s", self.params["packages"])
        else:
            self.log.debug("build package with default packages")