code: public Vector3f mulTransposePosition(Matrix4fc mat, Vector3f dest) {
          float rx = mat.m00() * x + mat.m01() * y + mat.m02() * z + mat.m03();
          float ry = mat.m10() * x + mat.m11() * y + mat.m12() * z + mat.m13();
          float rz = mat.m20() * x + mat.m21() * y + mat.m22() * z + mat.m23();
          dest.x = rx;
          dest.y = ry;
          dest.z = rz;
          return dest;
      }
docs: /* (non-Javadoc)
  @see org.joml.Vector3fc#mulTransposePosition(org.joml.Matrix4fc, org.joml.Vector3f)