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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 as_json(obj: JsonObj, indent: Optional[str]=' ', **kwargs) -> str: """ Convert obj to json string representation. :param obj: pseudo 'self' :param indent: indent argument to dumps :param kwargs: other arguments for dumps :return: JSON formatted string """

    return obj._as_json_dumps(indent, **kwargs)