A higher level for defining online replaceable schematics using callback functions
[sim, outlist, userdata, replaced] = ld_ReplaceableNest(sim, ev, inlist, trigger_reload, fnlist, insizes, outsizes, intypes, outtypes, simnest_name, irpar_fname, dfeed, userdata)
inlist - input list()
outlist - output list()
For an example see modules/nested/demo/online_replacement