update_flow

Description:

public FlowReturn update_flow (FlowReturn fret)

Computes the combined flow return for the pads in it.

The FlowReturn parameter should be the last flow return update for a pad in this FlowCombiner. It will use this value to be able to shortcut some combinations and avoid looking over all pads again. e.g. The last combined return is the same as the latest obtained FlowReturn.

Parameters:

this	the FlowCombiner
fret	the latest FlowReturn received for a pad in this FlowCombiner

Returns:

The combined FlowReturn