Sets the iterator state. "cell" typically points to the cell contents,
but may also be given as "nullptr" in order to implement decoding on
demand. In that situation, the first that the client attempts to
access the cell contents, the GetCell() method is called and "cell_" is
updated in a thread-safe way.
Sets the iterator state. "cell" typically points to the cell contents, but may also be given as "nullptr" in order to implement decoding on demand. In that situation, the first that the client attempts to access the cell contents, the GetCell() method is called and "cell_" is updated in a thread-safe way.