How can I get SOPC builder to add Avalon-ST Idle Inserter / Remover

[Altera_Forum]

I have a custom component set that expose Avalon-ST sink & source interfaces to a channel. The channel does not support flow-control (a simple byte syncronous transfer). I would like to convince SOPC builder to 'involve' an Avalon-ST Idle Inserter at the ingress of this channel and an Avalon-ST Idle Remover at the egress. 

 The Idle Inserter & Remover are 'internal' components   set_module_property INTERNAL true   which I have surmised to mean that some magic in SOPC builder decides when to use them and I cannot just go pick them from the component library.   I have run out of guess on exactly what magic incantation I need to speak over SOPC builder to get it to play along.   I am, of course, quite capable of just lifting the component into my verilog code and being done with this odyssey. But there must be some 'intended' use for these components and I would like to understand that before I just go hacking & slashing.   I have learned tons from this forum and hope to learn tons more by asking these sorts of questions.   Thanks, Dave

[Altera_Forum]

I never did figure this out and I went for the fast & easy solution: A custom component that instantiates the (either) inserter or remover by including a .qip file in my component that has a global assignment to reference the original source. 

 set_global_assignment -name VERILOG_FILE [file join $::quartus(ip_rootpath) altera/sopc_builder_ip/altera_avalon_st_idle_inserter/altera_avalon_st_idle_inserter.v]    Oh well. March forward.