static void addTriToGroup(Group group, final int triIndex) {
        //group.faceIndices[group.nrFaces] = triIndex;
        group.faceIndices.add(triIndex);
        ++group.nrFaces;
    }
A private constructor to inhibit instantiation of this class.
jme3-core/src/main/java/com/jme3/util/mikktspace/MikktspaceTangentGenerator.java