private void clearPhysicsBody(){
        if (mNodeJni.getPhysicsBody() != null && mPhysicsDelegate != null) {
            mNodeJni.getPhysicsBody().setCollisionListener(null);
        }

        mNodeJni.clearPhysicsBody();
        hasPhysicsBody = false;
    }
Explicitly call setMaterials again with mMaterials. Allows children who override
setMaterials to modify them.
android/viro_bridge/src/main/java/com/viromedia/bridge/component/node/VRTNode.java