Public Shared Sub CancelAsyncRequest( _
   ByVal request As Request _
) 

public static void CancelAsyncRequest( 
   Request request
)

Parameters

request

There are cases during data retrieving or updating processes when you might want to cancel requests if they are taking too long to complete or hangs your system.

To batch cancel requests, use CancelAsyncRequests.

To get a list of pending requests, use GetPendingRequests method.

Reference