Multi-endpoint models create unnecessary endpoints

[billdenney]

My model looks vaguely like:

  model({
    ka <- exp(lka + bsv_ka)
    cl <- exp(lcl + bsv_cl)
    vc <- exp(lvc + bsv_vc)

    kel <- cl / vc

    d/dt(depot) <- -ka*depot
    d/dt(central) <- ka*depot - kel*central

    Cc <- central / vc * 1000
    Cc ~ add(add_sd) + prop(prop_sd)

    ratio_csf <- exp(lratio_csf)
    csf <- ratio_csf*Cc
    csf ~ add(add_sd_csf)
  })

There are endpoint names of "Endpoint: depot", "Endpoint: central", "Endpoint: peripheral1", even though they are all NULL.