class RuboCop::Cop::Style::EmptyCaseCondition

def correct_case_whens(corrector, case_node, when_nodes)
  case_to_first_when =
    case_node.loc.keyword.join(when_nodes.first.loc.keyword)
  corrector.replace(case_to_first_when, 'if')
  when_nodes.drop(1).each do |when_node|
    corrector.replace(when_node.loc.keyword, 'elsif')
  end
end