[Solved] Input Streams for Loading Assets

With the ModelKey, based on what it says here

Used to load model files, such as OBJ or Blender models. This uses cloneable smart asset management, so that when all clones of this model become unreachable, the original asset is purged from the cache, allowing textures, materials, shaders, etc referenced by the model to become collected.
(http://javadoc.jmonkeyengine.org/com/jme3/asset/ModelKey.html)

I’d have thought it’d eventually do it anyway providing you dereferenced it. No idea though, I always like to do it manually.