Number of fragments that have possibly been lost. This stat
is incremented when a gap is detected by a receiver delivery controller. A
delivery controller is created for every topic that has an interested
receiver. This stat is not updated for gaps detected in responses,
MIM transports, or UIMs. This stat will not be updated for hot-failover
receivers with arrival-order delivery (i.e. option ordered_delivery set to
0). SMX receivers are excluded from this stat. THIS FIELD IS UNSUPPORTED.

C# |
public long fragmentsLost()

Number of fragments possibly lost. THIS FIELD IS UNSUPPORTED.