As a safety feature, prevent deriving classes from overwriting parent fields. This is to avoid accidential side-effects.
LODMesh: more flexible API to make it easier to override LOD selection logic.
Node: Add SetStaticBB() API, which assigns a static BB to the node and disables automatic BB propagation and updates.
Material: add SetIgnoreUniformVarLocationNotFound() API to prevent debug checks on uniforms being present.