perSampleDominantFeatures works only with taxonomyRanks

[antagomir]

The perSampleDominantFeatures and addPerSampleDominantFeatures

This works:

library(mia)
data(GlobalPatterns, package="mia")
tse <- GlobalPatterns
rowData(tse)$group <- as.character(sample.int(5, nrow(tse), replace = TRUE))
perSampleDominantFeatures(tse, rank="Class")

This gives error:

perSampleDominantFeatures(tse, rank="group")

Error: 'rank' must be a value from 'taxonomyRanks()'

We recently implemented the mergeFeatures functions so that they also allow other fields than ranks. Could we enable it here as well?