Query is a String property that represents the text for the query sent to the server when using the Finger method. Values in Query consist of Finger query tokens excluding the final host name in a multiple host query created using CompleteQuery. 

For example: 

   jblogs
   /W jblogs
   jblogs@somedomain.com
   /W jblogs@somedomain.com

Use CompleteQuery to get the query string including the final host in a multi-host query.

Finger 

CompleteQuery