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 ::xotcl::info_args {scope o method} { set result [list] foreach argName [$o ::nsf::methods::${scope}::info::method args $method] flag [$o ::nsf::methods::${scope}::info::method parameter $method] { if {[string match -* $flag]} continue lappend result $argName } #puts stderr "+++ get ${inst}args for $o $method => $result" return $result }