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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 parse_json(content):
 """Tries to parse a string into a json object. This also performs a trim of all values, recursively removing leading and trailing whitespace. Parameters content: A JSON format string. Returns ------- obj: The object represented by the json string. Raises ------ InvalidContent If the content is not a valid json string. """

    try:
        json_content = json.loads(content)
        return _recursive_strip(json_content)
    except json.JSONDecodeError:
        raise InvalidContent("content is not a json string.")