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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_required_parameter_definitions(self):
 """Returns all template parameters that do not have a default value. Returns: dict: dict of required CloudFormation Parameters for the blueprint. Will be a dictionary of <parameter name>: <parameter attributes>. """

        required = {}
        for name, attrs in self.get_parameter_definitions().items():
            if "Default" not in attrs:
                required[name] = attrs
        return required