public Matrix4f getWorldMatrix() {
        return cachedWorldMat;
    }
A {@link Matrix4f matrix} that transforms the {@link Geometry#getMesh() mesh}
from model space to world space. This matrix is computed based on the
{@link Geometry#getWorldTransform() world transform} of this geometry.
In order to receive updated values, you must call {@link Geometry#computeWorldMatrix() }
before using this method.

@return Matrix to transform from local space to world space
jme3-core/src/main/java/com/jme3/scene/Geometry.java