This object contains the total number of Layer 4 (L4) optimized
signed bytes written to WAN by SMB Application Optimizer since
SMB Application Optimizer was started. L4 optimization comprises
of TFO, DRE and LZ optimizations.
Discontinuities in the value of this counter can occur at
re-initialization of the SMB AO. The last discontinuity time is
indicated by the value of cwoAoStatsLastResetTime for the SMB
AO.