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Converts an N-tuple of federated values into a federated N-tuple value.
value: A value of a TFF named tuple type, the elements of which are federated values with the same placement.
A federated value placed at the same location as the members of
which every member component is a named tuple that consists of the
corresponding member components of the elements of
TypeError: if the argument is not a named tuple of federated values with the same placement.