library(RXMCDA)
altIDs <- c("x","y","z")
tree = newXMLDoc()
newXMLNode("xmcda:XMCDA", namespace = c("xsi" = "http://www.w3.org/2001/XMLSchema-instance", "xmcda" = "http://www.decision-deck.org/2009/XMCDA-2.1.0"), parent=tree)
putAlternativesIDs(tree,altIDs)
altIDs2 <- getAlternativesIDs(tree)
stopifnot(identical(altIDs,altIDs2[[1]]))
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