def all_operations(self) -> Iterator[ops.Operation]:
        """Iterates over the operations applied by this circuit.

        Operations from earlier moments will be iterated over first. Operations
        within a moment are iterated in the order they were given to the
        moment's constructor.
        """
        return (op for moment in self for op in moment.operations)
Iterates over the operations applied by this circuit.

        Operations from earlier moments will be iterated over first. Operations
        within a moment are iterated in the order they were given to the
        moment's constructor.