if (FALSE) {
o <- opal.login('administrator','password', url='https://opal-demo.obiba.org')
dsadmin.perm_add(o, c('andrei', 'valentina'), 'user', 'use')
dsadmin.perm(o)
dsadmin.perm_delete(o, c('andrei', 'valentina'), 'user')
opal.logout(o)
}
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