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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 add_node_set_configuration(self, param_name, node_to_value):
 """ Set Nodes parameter :param param_name: parameter identifier (as specified by the chosen model) :param node_to_value: dictionary mapping each node a parameter value """

        for nid, val in future.utils.iteritems(node_to_value):
            self.add_node_configuration(param_name, nid, val)