Namespaces in Imports field not imported from:
  ‘KernSmooth’ ‘MASS’ ‘class’ ‘cluster’ ‘lattice’ ‘nnet’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘KernSmooth’ ‘MASS’ ‘class’ ‘cluster’ ‘lattice’ ‘nnet’
  All declared Imports should be used.