public void calculateLocalInertia(float mass, javax.vecmath.Vector3f vector) {
        if (cShape == null) {
            return;
        }
        if (this instanceof MeshCollisionShape) {
            vector.set(0, 0, 0);
        } else {
            cShape.calculateLocalInertia(mass, vector);
        }
    }
used internally, not safe

@param mass the desired mass for the body
@param vector storage for the result (not null, modified)
jme3-jbullet/src/main/java/com/jme3/bullet/collision/shapes/CollisionShape.java