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z6Common cloud-init devel commandline utility functions. )Paths)Init )fetch_existing_datasourcereturnc C s( t g d}| r|j| d |j |jS )a Return a Paths object based on the system configuration on disk.
:param fetch_existing_datasource: String one of check or trust. Whether to
load the pickled datasource before returning Paths. This is necessary
when using instance paths via Paths.get_ipath method which are only
known from the instance-id metadata in the detected datasource.
:raises: DataSourceNotFoundException when no datasource cache exists.
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