def METHOD_NAME(self):
    self.CACHE_SOURCE_NAME = "CACHE_S3_SOURCE"
    self.UPDATE_CACHE_SOURCE_NAME = "CACHE_FILE_SYSTEM_SOURCE"
    self.SOURCE_TYPE = S3
    self.UPDATE_SOURCE_TYPE = FILE_SYSTEM
    self.SOURCE_PACKAGES = {
        "root_package_1": {"version": "", "modules": ["test1", "test2"]},
        "root_package_2": {"version": "", "modules": ["test3", "test4"]},
        "root_package_3": {"version": "", "modules": ["test5", "test6"]},
    }
    self.UPDATED_SOURCE_PACKAGES = {
        "root_package_1": {"version": "", "modules": ["test1", "test2"]},
    }
    self.SOURCE_KWARGS = {
        "service_address": "service_address",
        "bucket": "bucket",
        "access_key": "access_key",
        "secret_key": "secret_key",
        "source_dir": "",
    }
    self.UPDATED_SOURCE_KWARGS = {"path": "/tmp"}
    self.cache_source = CachePackageSource.objects.add_cache_source(
        name=self.CACHE_SOURCE_NAME,
        source_type=self.SOURCE_TYPE,
        packages=self.SOURCE_PACKAGES,
        **self.SOURCE_KWARGS
    )