class RuboCop::Cop::Style::EmptyCaseCondition

def correct_case_when(corrector, case_node, when_nodes)
  case_range = case_node.loc.keyword.join(when_nodes.shift.loc.keyword)
  corrector.replace(case_range, 'if')
  when_nodes.each do |when_node|
    corrector.replace(when_node.loc.keyword, 'elsif')
  end
end