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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 from_json(cls, json_data):
 """Tries to convert a JSON representation to an object of the same type as self A class can provide a _fromJSON implementation in order to do specific type checking or other custom implementation details. This method will throw a ValueError for invalid JSON, a TypeError for improperly constructed, but valid JSON, and any custom errors that can be be propagated from class constructors. :param json_data: The JSON string to convert :type json_data: str | unicode :raises: TypeError, ValueError, LanguageMapInitError """

        data = json.loads(json_data)
        result = cls(data)
        if hasattr(result, "_from_json"):
            result._from_json()
        return result