getIndexSinkNode.m

function sinkidx = getIndexSinkNode(self)
% INDEX = GETINDEXSINKNODE()
 
% Copyright (c) 2012-2026, Imperial College London
% All rights reserved.
 
if isempty(self.sinkidx)
    self.sinkidx = find(cellisa(self.nodes,'Sink'));
end
sinkidx = self.sinkidx;
end