// not available in my fork of ews repo.

//AddNewImContactToGroup operation  
 
//Exchange 2013
 

//AddImContactToGroup operation  
 
//Exchange 2013
 

//AddImGroup operation  
 
//Exchange 2013
 

//AddNewTelUriContactToGroup operation  
 
//Exchange 2013
 

//AddDistributionGroupToImList operation  
 
//Exchange 2013
 

//GetImItemList operation  
 
//Exchange 2013
 

//GetImItems operation  
 
//Exchange 2013
 

//RemoveContactFromImList operation  
 
//Exchange 2013
 

//RemoveImContactFromGroup operation  
 
//Exchange 2013
 

//RemoveDistributionGroupFromImList operation  
 
//Exchange 2013
 

//RemoveImGroup operation  
 
//Exchange 2013
 

//SetImGroup operation  
 
//Exchange 2013