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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 install(self, path, dry_run=False, overrides=None):
 """Install this variant into another package repository. If the package already exists, this variant will be correctly merged into the package. If the variant already exists in this package, the existing variant is returned. Args: path (str):
 Path to destination package repository. dry_run (bool):
 If True, do not actually install the variant. In this mode, a `Variant` instance is only returned if the equivalent variant already exists in this repository; otherwise, None is returned. overrides (dict):
 Use this to change or add attributes to the installed variant. Returns: `Variant` object - the (existing or newly created) variant in the specified repository. If `dry_run` is True, None may be returned. """

        repo = package_repository_manager.get_repository(path)
        resource = repo.install_variant(self.resource,
                                        dry_run=dry_run,
                                        overrides=overrides)
        if resource is None:
            return None
        elif resource is self.resource:
            return self
        else:
            return Variant(resource)