No "SusPOM" taxon in streambugs.example.model.extended but food-web processes parameters relating to it

While re-factoring for #8 (closed) I've came across an issue with missing matches between state variables for the food-web processes parameters relating to "SusPOM" taxon:

> model <- streambugs::streambugs.example.model.extended()
> any(model$y.names$taxa == "SusPOM")
[1] FALSE
> names(model$par)[grep(".*_SusPOM_.*", names(model$par))]
 [1] "Cons_Chironomidae_SusPOM_Chironomidae"           "Cons_Chironomidae_SusPOM_FPOM"                  
 [3] "Cons_Polycentropodidae_SusPOM_Polycentropodidae" "Cons_Polycentropodidae_SusPOM_FPOM"             
 [5] "Cons_Limnephilidae_SusPOM_Limnephilidae"         "Cons_Limnephilidae_SusPOM_FPOM"                 
 [7] "Cons_Ephemeradanica_SusPOM_Ephemeradanica"       "Cons_Ephemeradanica_SusPOM_FPOM"                
 [9] "Cons_Sphaerium_SusPOM_Sphaerium"                 "Cons_Sphaerium_SusPOM_FPOM"                     
[11] "Cons_Hydropsyche_SusPOM_Hydropsyche"             "Cons_Hydropsyche_SusPOM_FPOM"                   
[13] "Cons_Simulium_SusPOM_Simulium"                   "Cons_Simulium_SusPOM_FPOM"

I'm not sure if that's an issue per se, but in case it is I report it here. I will describe the direct problem I have in a separate issue.