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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 get(self):
 """Get a credential by file path"""

        args = self.get_parser.parse_args()
        cred = self.manager.get_credential(args)
        if cred is None:
            return abort(http_client.BAD_REQUEST,
                         message='Unable to decrypt credential value.')
        else:
            return cred