Namespaces in Imports field not imported from:
  ‘C50’ ‘HDclassif’ ‘MASS’ ‘MLmetrics’ ‘Matrix’ ‘adabag’ ‘base’
  ‘caTools’ ‘e1071’ ‘earth’ ‘evtree’ ‘frbs’ ‘glmnet’ ‘hda’ ‘ipred’
  ‘kernlab’ ‘kknn’ ‘klaR’ ‘mda’ ‘nnet’ ‘party’ ‘pls’ ‘randomForest’
  ‘rpartScore’ ‘sparseLDA’ ‘themis’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘C50’ ‘HDclassif’ ‘MASS’ ‘MLmetrics’ ‘Matrix’ ‘adabag’ ‘base’
  ‘caTools’ ‘e1071’ ‘earth’ ‘evtree’ ‘frbs’ ‘glmnet’ ‘hda’ ‘ipred’
  ‘kernlab’ ‘kknn’ ‘klaR’ ‘mda’ ‘nnet’ ‘party’ ‘pls’ ‘randomForest’
  ‘rpartScore’ ‘sparseLDA’ ‘themis’
  All declared Imports should be used.