This procedure is defined in the server but not documented via ad_proc or proc_doc and may be intended as a private interface.
The procedure is defined as:
proc nsmcp::accessIngestionObserve {observer phase bytes batch} {
if {$observer ne {}} {
set call [list {*}$observer $phase $bytes]
if {$batch ne {}} {lappend call $batch}
uplevel #0 $call
}
}