def unset_expiry_time(imsis)
      imsis = [imsis] if imsis.class != Array
      threads = [], result = []
      imsis.map do |imsi|
        threads << Thread.new do
          result << { 'imsi' => imsi }.merge(@api.post(path: "/subscribers/#{imsi}/unset_expiry_time"))
        end
      end
      threads.each(&:join)
      result
    end
def unset_expiry_time(imsis)
      imsis = [imsis] if imsis.class != Array
      threads = [], result = []
      imsis.map do |imsi|
        threads << Thread.new do
          result << { 'imsi' => imsi }.merge(@api.post(path: "/subscribers/#{imsi}/unset_expiry_time"))
        end
      end
      threads.each(&:join)
      result
    end
SIMの有効期限設定を解除