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::accessTimeIndexStamp {file} {
if {![dict exists $file ctime]} {
return {}
}
return [list [dict get $file size] [dict get $file mtime] [dict get $file ctime] [ns_crypto::md string -digest sha256 -- [dict get $file prefix]]]
}