Number of UM requests received (message type LBM_MSG_REQUEST)
(TCP, LBM-RM, LBT-RU, LBT-IPC, LBT-RDMA)

- n (Int32)
- Statistics set index

Number of UM request messages received (message type
LBM_MSG_REQUEST).

This method returns a value from the nth set of statistics
encapsulated within this object.