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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_sdf(identifier, namespace='cid', domain='compound',operation=None, searchtype=None, **kwargs):
 """Request wrapper that automatically parses SDF response and supresses NotFoundError."""

    try:
        return get(identifier, namespace, domain, operation, 'SDF', searchtype, **kwargs).decode()
    except NotFoundError as e:
        log.info(e)
        return None