nx::trait::require

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 nx::trait::require {traitName} {
    
    if {[::nsf::object::exists $traitName]} {return}
    set key ::nsf::traitIndex($traitName)
    if {[info exists $key]} {
      array set "" [set $key]
      if {$(script) ne ""} {
	eval $(script)
      }
    }
    if {[::nsf::object::exists $traitName]} {return}
    error "cannot require trait $traitName, trait unknown"
  
}