class RuboCop::Cop::Lint::UnreachableCode

def flow_expression?(node)
  return true if flow_command?(node)
  case node.type
  when :begin, :kwbegin
    expressions = *node
    expressions.any? { |expr| flow_expression?(expr) }
  when :if
    check_if(node)
  when :case
    check_case(node)
  else
    false
  end
end