如何从EWS java API获取唯一联系人列表名称？

我已尝试获取Office365的联系人。但是两个联系人都列出了姓名，并且联系人得到了相同的结果。如何分别获取联系人列表名称和联系人

我的代码：

Folder folder = Folder.bind(service, WellKnownFolderName.Contacts);    
ItemView view = new ItemView(10);
FindItemsResults findResults = service.findItems(folder.getId(), view);
System.out.println(" Resulting Size : "+ findResults.getTotalCount());
for (Item item : findResults.getItems()) {
   try { 
      System.out.println("id:" + item.getId());
      System.out.println("sub==========" + item.getSubject());
   } catch (Exception e) {
      System.out.println("Exception while processing");
   }
}

结果：

Folder folder = Folder.bind(service, WellKnownFolderName.Contacts);    
ItemView view = new ItemView(10);
FindItemsResults findResults = service.findItems(folder.getId(), view);
System.out.println(" Resulting Size : "+ findResults.getTotalCount());
for (Item item : findResults.getItems()) {
   try { 
      System.out.println("id:" + item.getId());
      System.out.println("sub==========" + item.getSubject());
   } catch (Exception e) {
      System.out.println("Exception while processing");
   }
}

最终尺寸：12

id:AAMKADKZMDQ5MMUZLTAYMDNTNJOC04OTBMLWI5ZJKYZMYZDHMQBGAAAAAACPDP4753ORRZHTSPSLK0QKBWDFMCVQ3WNZRP46NKMCZVTLAAAAAAEOAADFMCVQ3WNZRP46NKMCZVTLAAAAAAAAAAAVHBWZAAA= 子==============Prem联系人列表 id:AAMKADKZMDQ5MMUZLTAYMDNJOC04OTBMLWI5ZJKYZMYZDHMQBGAAAAAACPDP4753ORRZHTSPSLK0QKBWDFMCVQ3WNZRP46NKMCZVTLAAAAEOAADFMCVQ3WNZRP46NKMCZVTLAAAAAAAAAAAAAAAFMCVQ3WNKZRP46NKMCZVTLAAAVHBWYAAA= 子=Ramesh敏捷列表 id:AAMKADKZMDQ5MMUZLTAYMDNJOC04OTBMLWI5ZJHKYZMYZDHMQBGAAAAAACPDP4753ORRZHTSPSLK0QKBWDFMCVQ3WNZRP46NKMCZVTLAAAAEOAADFMCVQ3WNZRP46NKMCZVTLAAAAAAAAAAAAAVHBWXAAA= 子==============dshvbisdjkbv id:AAMKADKZMDQ5MMUZLTAYMDNJOC04OTBMLWI5ZJKYZMYZDHMQBGAAAAAACPDP4753ORRZHTSPSLK0QKBWDFMCVQ3WNZRP46NKMCZVTLAAAAEOAADFMCVQ3WNZRP46NKMCZVTLAAAAAAAAAAAAAAAFMCVQ3WNKZRP46NKMCZVTLAAAVHBWWAAA= 子===========HJDFBDFBDF id:AAMKADKZMDQ5MMUZLTAYMDNJOC04OTBMLWI5ZJKYZMYZDHMQBGAAAAAACPDP4753ORRZHTSPSLK0QKBWDFMCVQ3WNZRP46NKMCZVTLAAAAAAEOAADFMCVQ3WNZRP46NKMCZVTLAAAAAAAAAAAAAVHBWVAAA= 子==============作业 id:AAMKADKZMDQ5MMUZLTAYMDNTNJOC04OTBMLWI5ZJKYZMYZDHMQBGAAAAAACPDP4753或ZHTSPSLK0QKBWDFMCVQ3WNZRP46NKMCZVTLAAAAEOAADFMCVQ3WNZRP46NKMCZVTLAAAAAAAAAAAAAAAFMCVQ3WNKZRP46NKMCZVTLAAAVHBWAAA= 分段=================滑行 id:aamkadkzmdq5Mmuzltaymditndnjoc04otbmlwi5zjhkyzmyzdhmqbgaaaaaaacpdp4753 orrzhtspslk0qkbwdfmcvq3wnzrp46nkmczvtlaaaaaaaeoaadfmcvq3wnzrp46nkmczvtlaavhdaaa= 子==============非 id:aamkadkzmdq5Mmuzltaymditndnjoc04otbmlwi5zjhkyzmyzdhmqbgaaaaaaacpdp4753 orrzhtspslk0qkbwdfmcvq3wnzrp46nkmczvtlaaaaaaaeoaadfmcvq3wnzrp46nkmczvtlaavhbwaa= 子==============saming id:aamkadkzmdq5Mmuzltaymdintnjoc04otbmlwi5zjhkyzmyzdhmqbgaaaaaaacpdp4753orrzhtspslk0qkbwdfmcvq3wnzrp46nkmczvtlaaaaaaaeoaadfmcvq3wnzrp46nkmczvtlaavhraaa= 子==============Mani Rathnam id:AAMKADKZMDQ5MMUZLTAYMDNJOC04OTBMLWI5ZJKYZMYZDHMQBGAAAAAACPDP4753ORRZHTSPSLK0QKBWDFMCVQ3WNZRP46NKMCZVTLAAAAAAEOAADFMCVQ3WNZRP46NKMCZVTLAAAAAAAAAAAAAVHBWQAAA= 子==============enc