JS3D: add setMaintenance helper to ModelEntity
JS3D: add setMaintenance helper to ModelEntity

Signed-off-by: Geoffrey.Savinkoff <b098de101455f0f84e5720254b3ca63f8ac84e7b@ausencosandwell>
Signed-off-by: Harvey Harrison <eadbd6b462bf3c97df0300a934c12bc2e5d1fe51@ausencosandwell.com>

jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim